Luke 1:13-20

But the angel said to him, Fear not, Zachariah; for thy prayer was heard, and thy wife Elizabeth shall bear thee a son; and thou shalt call his name John.

Romans 9:6-9

Not as though the word of God hath failed; for not all they that are of Israel are Israel;

Galatians 4:28-31

But ye, brethren, as Isaac was, are children of a 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
toward Abraham and his offspring for ever, as he spoke to our fathers.