Luke 1:13-20

And the angel said to him; Fear not, Zacharias; because thy prayer has been heard, and thy wife Elizabeth shall bring forth a son to thee, and thou shalt call his name John.

Romans 9:6-9

But not as that the word of God has been a failure. For these are not all Israel who are of Israel;

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 his seed forever.