¹¹ It was by faith that even Sarah was able to have a child, though she was barren and was too old. She believed^[a] that God would keep his promise.

²⁰ Abraham never wavered in believing God’s promise. In fact, his faith grew stronger, and in this he brought glory to God. ²¹ He was fully convinced that God is able to do whatever he promises.

²³ Let us hold tightly without wavering to the hope we affirm, for God can be trusted to keep his promise.

¹¹ Abraham and Sarah were both very old by this time, and Sarah was long past the age of having children. ¹² So she laughed silently to herself and said, “How could a worn-out woman like me enjoy such pleasure, especially when my master—my husband—is also so old?”

¹³ Then the Lord said to Abraham, “Why did Sarah laugh? Why did she say, ‘Can an old woman like me have a baby?’ ¹⁴ Is anything too hard for the Lord? I will return about this time next year, and Sarah will have a son.”

The Birth of Isaac

21 The Lord kept his word and did for Sarah exactly what he had promised. ² She became pregnant, and she gave birth to a son for Abraham in his old age. This happened at just the time God had said it would.