Luke 1:13-20

But the angel said to him, "Do not be afraid, Zechariah, for your prayer is heard; and your wife Elizabeth will bear you a son, and you shall call his name John.

Romans 9:6-9

But it is not as though the word of God had failed. For not all who are descended from Israel are Israel,

Galatians 4:28-31

Now you, brethren, like Isaac, are children of promise.

Treasury of Scripture Knowledge

Summary

And God said, Sarah thy wife shall bear thee a son indeed; and thou shalt call his name Isaac: and I will establish my covenant with him for an everlasting covenant, and with his seed after him.

General references

Bible References

General references

Luke 1:55
as he spoke to our fathers, to Abraham and to his seed forever."