And I will give them an heart to know me, that I am the LORD: and they shall be my people, and I will be their God: for they shall return unto me with their whole heart. (Jeremiah 24:7)
And the LORD your God will circumcise thine heart, and the heart of your seed, to love the LORD your God with all thine heart, and with all your soul, that you may live. (Deuteronomy 30:6)