Genesis 18:10
And he said, I will certainly return to thee when the season comes round, and, lo, Sarah thy wife shall have a son. And Sarah heard in the tent door, which was behind him.
Genesis 21:2
And Sarah conceived, and bore Abraham a son in his old age, at the set time of which God had spoken to him.
Genesis 17:21
But I will establish my covenant with Isaac, whom Sarah shall bear to thee at this set time in the next year.
Genesis 17:19
And God said, No, but Sarah thy wife shall bear thee a son, and thou shall call his name Isaac. And I will establish my covenant with him for an everlasting covenant for his seed after him.
Genesis 16:10
And the agent of LORD said to her, I will greatly multiply thy seed, that it shall not be numbered for multitude.
Genesis 17:16
And I will bless her. And moreover I will give thee a son by her. Yea, I will bless her, and she shall be [a mother of] nations; kings of peoples shall be by her.
Genesis 18:13-14
And LORD said to Abraham, Why did Sarah laugh, saying, Shall I who am old certainly bear a child?
Genesis 22:15-16
And the agent of LORD called to Abraham a second time out of heaven,
Judges 13:3-5
And the agent of LORD appeared to the woman, and said to her, Behold now, thou are barren, and do not bear, but thou shall conceive, and bear a son.
2 Kings 4:16-17
And he said, At this season, when the time comes round, thou shall embrace a son. And she said, No, my lord, thou man of God, do not lie to thy handmaid.
Luke 1:13
But the agent said to him, Fear not, Zacharias, because thy plea was heard, and thy wife Elizabeth will bear a son for thee. And thou shall call his name John.
Romans 9:8-9
That is, the children of the flesh, these are not children of God, instead, the children of the promise are reckoned for seed.
Galatians 4:23
But in fact, the man from the servant girl was born according to flesh, but the man from the freewoman through promise.
Galatians 4:28
Now we, brothers, who correspond to Isaac, are children of promise.