Luke 1:13

But the angel said to him: Fear not, Zachariah; for your prayer is heard, and your wife Elizabeth shall bear you a son, and you shall call his name John.

Romans 9:8-9

That is, the children of the flesh are not the children of God; but the children of the promise are counted for the posterity.

Galatians 4:23

But the one by the bondmaid was born according to the flesh; the other, by the free woman, was by promise.

Galatians 4:28

We, indeed, brethren, like Isaac, are children of promise.

Treasury of Scripture Knowledge

Summary

And he said, I will certainly return unto thee according to the time of life; and, lo, Sarah thy wife shall have a son. And Sarah heard it in the tent door, which was behind him.

Bible References

Lo, sarah

Luke 1:13
But the angel said to him: Fear not, Zachariah; for your prayer is heard, and your wife Elizabeth shall bear you a son, and you shall call his name John.
Romans 9:8
That is, the children of the flesh are not the children of God; but the children of the promise are counted for the posterity.
Galatians 4:23
But the one by the bondmaid was born according to the flesh; the other, by the free woman, was by promise.