“And the LORD visited Sarah as he had said, and the LORD did unto Sarah as he had spoken.”

Opening Prayer Father, thank You because You are faithful to Your Word. As I study Genesis 21, teach me to distinguish Your promise from human attempts to accomplish Your purposes.

Give me patience when I must wait, faith when circumstances appear impossible, and confidence that You hear the cries of those in distress.

Open my eyes to recognize Your provision, and teach me to worship You as the everlasting God. In Jesus' name, Amen.

Introduction

Genesis 21 is a chapter of fulfilled promise, family conflict, divine provision, separation, covenant, and worship.

For years Abraham and Sarah had waited for the son God promised. Human circumstances seemed to stand against the promise. Abraham was old, Sarah was beyond the ordinary years of childbearing, and their attempts to resolve the situation through human reasoning had already produced painful
consequences.

But Genesis 21 opens with a powerful declaration. God did exactly what He had said.

Isaac is born at God's appointed time.

Yet the chapter does not end with celebration. Tension develops between Sarah, Hagar, Ishmael, and Isaac. Hagar and Ishmael are sent away, and in the wilderness their water is exhausted.

There, another dimension of God's character is revealed.

The God who fulfilled His promise concerning Isaac did not ignore Ishmael.

God heard the voice of the lad.

God opened Hagar's eyes to see provision in the wilderness and reaffirmed that Ishmael would become a nation.

The chapter then moves to Abraham's dealings with Abimelech and concludes with Abraham calling upon the name of the LORD, the everlasting God.

Genesis 21 therefore teaches us that God is faithful to His promise, attentive to human distress, sovereign over His purposes, and worthy of our trust.

Genesis 21:1 And the LORD visited Sarah as he had said, and the LORD did unto Sarah as he had spoken.

Genesis 21:2 For Sarah conceived, and bare Abraham a son in his old age, at the set time of which God had spoken to him.

Genesis 21:1–2 — “As He Had Said”

Genesis 21 begins by emphasizing the faithfulness of God.

Two expressions deserve special attention:

“as he had said”

and

“as he had spoken.”

Sarah's pregnancy and Isaac's birth were not accidental events. They represented the fulfillment of what God had previously declared.

God had promised Abraham a son through Sarah.

Time passed.

Circumstances changed.

Abraham and Sarah grew older.

But God's Word remained.

Genesis 21 demonstrates that the passing of time did not cancel the promise of God.

Key Principle

Delay in fulfillment does not necessarily mean denial of the promise.

Genesis 21:2 — “At the Set Time”

Isaac was born at the set time God had spoken.

This introduces the importance of divine timing.

Abraham had received the promise long before he held Isaac.

There was a period between:

Promise → Waiting → Fulfillment

Waiting can be difficult because we often interpret God's faithfulness according to our preferred timetable.

But Genesis teaches that God had an appointed time.

Isaac did not arrive too early.

Isaac did not arrive too late.

He came according to the time God had declared.

Genesis 21:3 And Abraham called the name of his son that was born unto him, whom Sarah bare to him, Isaac.

Genesis 21:4 And Abraham circumcised his son Isaac being eight days old, as God had commanded him.

Genesis 21:5 And Abraham was an hundred years old, when his son Isaac was born unto him.

Genesis 21:3–5 — Isaac Is Born

Abraham named the child Isaac, in obedience to God's earlier instruction.

The name Isaac is associated with laughter.

What once seemed impossible had become visible before Abraham and Sarah.

Abraham was one hundred years old when Isaac was born.

The age of Abraham emphasizes the extraordinary nature of the fulfillment.

The fulfillment could not simply be credited to favorable human circumstances.

God had acted according to His promise.

Genesis 21:6 And Sarah said, God hath made me to laugh, so that all that hear will laugh with me.

Genesis 21:7 And she said, Who would have said unto Abraham, that Sarah should have given children suck? for I have born him a son in his old age

Genesis 21:6–7 — Sarah's Laughter

Sarah had previously laughed when she heard that she would bear a son in her old age.

Now her laughter has a different character.

The promise has become reality.

The woman who once asked how such a thing could happen now holds the child God promised.

This demonstrates how God can transform the meaning of a season.

What once produced uncertainty became a testimony.

What once appeared impossible became evidence of God's faithfulness.

Genesis 21:8 And the child grew, and was weaned: and Abraham made a great feast the same day that Isaac was weaned.

Genesis 21:9 And Sarah saw the son of Hagar the Egyptian, which she had born unto Abraham, mocking.

Genesis 21:10 Wherefore she said unto Abraham, Cast out this bondwoman and her son: for the son of this bondwoman shall not be heir with my son, even with Isaac.

Genesis 21:11 And the thing was very grievous in Abraham's sight because of his son.

Genesis 21:12 And God said unto Abraham, Let it not be grievous in thy sight because of the lad, and because of thy bondwoman; in all that Sarah hath said unto thee, hearken unto her voice; for in Isaac shall thy seed be called.

Genesis 21:13 And also of the son of the bondwoman will I make a nation, because he is thy seed.

Genesis 21:8–13 — Conflict Within Abraham's Household

Isaac grew and was weaned, and Abraham prepared a great feast.

But celebration was followed by conflict.

Sarah saw Ishmael, the son of Hagar, and demanded that Hagar and her son be sent away.

The situation distressed Abraham because Ishmael was also his son.

This moment reveals the long-term consequences of decisions made earlier in Abraham and Sarah's story.

Genesis 16 had recorded their attempt to obtain the promised seed through Hagar.

Genesis 21 shows that human attempts to accomplish God's promise can produce consequences extending far beyond the original decision.

Yet God reassured Abraham concerning Ishmael.

Isaac would occupy the particular covenant role God had appointed, but Ishmael would not be forgotten.

God also promised to make a nation from Ishmael because he was Abraham's seed.

Isaac and Ishmael — Different Roles

Genesis 21 requires careful distinction.

God's choice of Isaac for the covenant line does not mean that Ishmael had no value before God.

The chapter actually demonstrates the opposite.

God distinguishes their roles while showing concern for both sons.

Through Isaac, the covenant line would continue.

Concerning Ishmael, God promised that he would become a nation.

Different purposes do not mean absence of divine concern.

This distinction becomes important throughout the remaining Genesis narrative.

Genesis 21:14 And Abraham rose up early in the morning, and took bread, and a bottle of water, and gave it unto Hagar, putting it on her shoulder, and the child, and sent her away: and she departed, and wandered in the wilderness of Beersheba.

Genesis 21:15 And the water was spent in the bottle, and she cast the child under one of the shrubs.

Genesis 21:16 And she went, and sat her down over against him a good way off, as it were a bowshot: for she said, Let me not see the death of the child. And she sat over against him, and lift up her voice, and wept.

Genesis 21:14–16 — Hagar in the Wilderness

Abraham sent Hagar and Ishmael away with bread and water.

Eventually their water was exhausted.

Hagar found herself in a wilderness situation where her resources were no longer sufficient.

She placed Ishmael under a shrub and moved away because she could not bear to watch what she feared would happen.

This is one of the most emotionally intense scenes in Genesis.

Hagar had reached the end of what she possessed.

No water.

No visible solution.

No apparent human assistance.

But the absence of visible provision did not mean the absence of God.

Genesis 21:17 And God heard the voice of the lad; and the angel of God called to Hagar out of heaven, and said unto her, What aileth thee, Hagar? fear not; for God hath heard the voice of the lad where he is.

Genesis 21:17 — “God Heard the Voice of the Lad”

One of the central statements of the chapter is:

God heard.

Hagar and Ishmael were in the wilderness, but they were not beyond God's attention.

God's response also connects powerfully with Ishmael's name, which carries the idea that God hears.

The God who had previously encountered Hagar in Genesis 16 again demonstrated His awareness of her circumstances.

The wilderness did not silence their cry before God.

Genesis 21:18 Arise, lift up the lad, and hold him in thine hand; for I will make him a great nation.

Genesis 21:17–18 — “Fear Not”

The angel of God called to Hagar and told her not to fear.

God reminded her that Ishmael still had a future.

Her present circumstances looked like an ending.

God's promise revealed that it was not.

This is an important distinction:

Hagar was looking at the immediate crisis.

God was speaking from the perspective of His purpose.

The wilderness could not cancel what God had spoken concerning Ishmael.

Genesis 21:19 And God opened her eyes, and she saw a well of water; and she went, and filled the bottle with water, and gave the lad drink.

Genesis 21:19 — “God Opened Her Eyes”

This is one of the most powerful moments in Genesis 21:

God opened Hagar's eyes, and she saw a well of water.

The text does not emphasize God creating the well at that moment.

It emphasizes Hagar being enabled to see the provision.

Sometimes God's provision is not absent.

We simply have not yet recognized it.

Fear can narrow our vision until the crisis becomes all we can see.

But when God opened Hagar's eyes, the wilderness contained something she desperately needed:

water.

She filled the bottle and gave Ishmael drink.

Genesis 21:20 And God was with the lad; and he grew, and dwelt in the wilderness, and became an archer.

Genesis 21:21 And he dwelt in the wilderness of Paran: and his mother took him a wife out of the land of Egypt.

Genesis 21:20–21 — God Was With Ishmael

Scripture makes an important statement:

God was with the lad.

Ishmael grew, lived in the wilderness, and became an archer.

His mother obtained a wife for him from Egypt.

Although Ishmael was not the son through whom the specific covenant line would continue, God remained involved in his life.

Genesis refuses to allow us to conclude that Ishmael was simply abandoned.

Genesis 21:22 And it came to pass at that time, that Abimelech and Phichol the chief captain of his host spake unto Abraham, saying, God is with thee in all that thou doest:

Genesis 21:23 Now therefore swear unto me here by God that thou wilt not deal falsely with me, nor with my son, nor with my son's son: but according to the kindness that I have done unto thee, thou shalt do unto me, and to the land wherein thou hast sojourned. {that thou...: Heb. if thou shalt lie unto me}

Genesis 21:24 And Abraham said, I will swear.

Genesis 21:25 And Abraham reproved Abimelech because of a well of water, which Abimelech's servants had violently taken away.

Genesis 21:26 And Abimelech said, I wot not who hath done this thing: neither didst thou tell me, neither yet heard I of it, but to day.

Genesis 21:27 And Abraham took sheep and oxen, and gave them unto Abimelech; and both of them made a covenant.

Genesis 21:28 And Abraham set seven ewe lambs of the flock by themselves.

Genesis 21:29 And Abimelech said unto Abraham, What mean these seven ewe lambs which thou hast set by themselves?

Genesis 21:30 And he said, For these seven ewe lambs shalt thou take of my hand, that they may be a witness unto me, that I have digged this well.

Genesis 21:31 Wherefore he called that place Beersheba; because there they sware both of them.

Genesis 21:31 — Beersheba

The location became associated with the oath made there.

Wells were extremely important in the ancient environment.

A well represented:

Life.

Water.

Settlement.

Survival.

Future stability.

Therefore, disputes over wells were not insignificant disagreements. Access to water could determine whether households and livestock could remain in an area.

The settlement of this dispute provided greater stability for Abraham's household.

Genesis 21:32 Thus they made a covenant at Beersheba: then Abimelech rose up, and Phichol the chief captain of his host, and they returned into the land of the Philistines.

Genesis 21:22–32 — Abraham and Abimelech

The narrative then shifts to Abraham's relationship with Abimelech.

Abimelech recognized something important about Abraham:

God was with him.

Abraham's relationship with God had become observable to others.

The two men entered into an agreement, but Abraham also addressed a dispute concerning a well that Abimelech's servants had taken.

This portion of the chapter demonstrates that faith does not eliminate the need for practical wisdom, honest communication, and clear agreements.

Abraham could trust God while also responsibly addressing the dispute.

Genesis 21:33 And Abraham planted a grove in Beersheba, and called there on the name of the LORD, the everlasting God.

Genesis 21:34 And Abraham sojourned in the Philistines' land many days.

Genesis 21:33 — The Everlasting God

The chapter closes with Abraham planting a grove or tamarisk tree in Beersheba and calling upon:

“the name of the LORD, the everlasting God.”

The Hebrew title is:

El Olam — אֵל עוֹלָם

The Everlasting God.

This is a fitting conclusion.

Human circumstances changed throughout the chapter.

Sarah moved from barrenness to motherhood.

Isaac moved from promise to fulfillment.

Hagar moved from despair to provision.

Ishmael moved toward his future.

Abraham moved from conflict to covenant with Abimelech.

But above every changing circumstance stood:

The Everlasting God.

People change.

Generations change.

Circumstances change.

But God remains.

Recall and Understanding

1. What did the LORD do for Sarah according to Genesis 21:1?

2. What repeated expressions in verse 1 emphasize God's faithfulness?

3. At what kind of time was Isaac born?

4. How old was Abraham when Isaac was born?

5. What does Isaac's name remind us of in this narrative?

6. What conflict developed after Isaac was weaned?

7. Why was Abraham distressed concerning Ishmael?

8. What promise did God make concerning Ishmael?

9. What happened when Hagar's water was exhausted?

10. Whose voice did God hear in the wilderness?

11. What did Hagar see after God opened her eyes?

12. What does Scripture say concerning God's presence with Ishmael?

13. What did Abimelech recognize concerning Abraham?

14. What dispute did Abraham address with Abimelech?

15. By what title did Abraham call upon the LORD at the end of the chapter?

Personal Application

1. Waiting for God's Timing

Is there something I have been waiting for so long that I have begun questioning whether God remembers me?

What does Isaac's birth “at the set time” teach me about waiting?

2. Human Solutions

Have I ever tried to force an outcome because waiting became uncomfortable?

What did Abraham and Sarah's experience teach me about allowing God to accomplish His purposes in His way?

3. God Hears

What situation in my life feels like Hagar's wilderness?

What does the statement “God heard” teach me about prayer during distress?

4. Open My Eyes

Could I be so focused upon what I lack that I am overlooking something God has already provided?

My prayer today is:

“Lord, open my eyes to see...”

5. God Was With Him

What difference should knowing that God is present make when I enter an unfamiliar season?

6. The Everlasting God

What changing circumstance do I need to place before the unchanging God?

Promise — Waiting — Fulfillment

A promise of God I am standing upon:

What waiting is teaching me:

Where I need patience:

Where I need God's provision:

What God has already provided:

What I need God to help me see:

Something God has already fulfilled in my life:

My praise to the Everlasting God:

Key Truth

Genesis 21 demonstrates that God is faithful to what He speaks. Isaac was born at the appointed time, proving that years of waiting had not cancelled God's promise. When Hagar and Ishmael entered the wilderness, God heard, spoke, provided, and preserved them according to His purpose. Abraham's story reminds us that circumstances change, human resources can become exhausted, and waiting can become difficult—but the LORD remains the Everlasting God.

Remember

God keeps His Word.

God works according to His appointed time.

Human attempts cannot improve God's plan.

God heard Ishmael in the wilderness.

God opened Hagar's eyes to provision.