Luke 1:13-20

but the angel said unto him, Fear not, Zacharias; for thy prayer is heard, and thy wife Elisabeth shall bear thee a son, and thou shalt call his name John:

Romans 9:6-9

Not that the word of God hath failed. For they are not all Israel, who are descended from Israel.

Galatians 4:28-31

Now we, brethren, like Isaac, are children of the 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
in remembrance of his mercy (even as He promised to our fathers, to Abraham and to his seed,) for ever."