Genesis 17:19

17:19 God said, “No, Sarah your wife is going to bear you a son, and you will name him Isaac. I will confirm my covenant with him as a perpetual covenant for his descendants after him.

Genesis 18:10

18:10 One of them said, “I will surely return to you when the season comes round again, and your wife Sarah will have a son!” (Now Sarah was listening at the entrance to the tent, not far behind him.

Genesis 18:14

18:14 Is anything impossible for the Lord? I will return to you when the season comes round again and Sarah will have a son.”

Psalms 12:6

12:6 The Lord’s words are absolutely reliable.

They are as untainted as silver purified in a furnace on the ground,

where it is thoroughly refined.

Matthew 24:35

24:35 Heaven and earth will pass away, but my words will never pass away.

Galatians 4:23

4:23 But one, the son by the slave woman, was born by natural descent, while the other, the son by the free woman, was born through the promise.

Galatians 4:28

4:28 But you, brothers and sisters, are children of the promise like Isaac.

Titus 1:2

1:2 in hope of eternal life, which God, who does not lie, promised before the ages began.