Romans 4:11-18

And he received the sign of circumcision, a seal of the righteousness which he had by faith while he was still uncircumcised, that he might be the father of all who believe but have not been circumcised, in order that righteousness might be reckoned to them.

Galatians 3:28-29

There is neither Jew nor Greek, there is neither slave nor free, there is neither male nor female; for you are all one in Christ Jesus.

Treasury of Scripture Knowledge

Summary

As for me, behold, my covenant is with thee, and thou shalt be a father of many nations.

Bible References

A father

Romans 4:11
And he received the sign of circumcision, a seal of the righteousness which he had by faith while he was still uncircumcised, that he might be the father of all who believe but have not been circumcised, in order that righteousness might be reckoned to them.
Galatians 3:28
There is neither Jew nor Greek, there is neither slave nor free, there is neither male nor female; for you are all one in Christ Jesus.