Romans 4:11

He only got circumcision as a sign or seal of the righteousness which belonged to his faith as an uncircumcised man. The object of this was to make him the father of all who believe as uncircumcised persons and thus have righteousness counted to them,

Acts 7:8

God also gave him the covenant of circumcision. So Abraham became the father of Isaac, whom he circumcised on the eighth day, Isaac was the father of Jacob, and Jacob of the twelve patriarchs.

Treasury of Scripture Knowledge

Summary

And ye shall circumcise the flesh of your foreskin; and it shall be a token of the covenant betwixt me and you.

Bible References

A token

Acts 7:8
God also gave him the covenant of circumcision. So Abraham became the father of Isaac, whom he circumcised on the eighth day, Isaac was the father of Jacob, and Jacob of the twelve patriarchs.
Romans 4:11
He only got circumcision as a sign or seal of the righteousness which belonged to his faith as an uncircumcised man. The object of this was to make him the father of all who believe as uncircumcised persons and thus have righteousness counted to them,
Acts 7:8
God also gave him the covenant of circumcision. So Abraham became the father of Isaac, whom he circumcised on the eighth day, Isaac was the father of Jacob, and Jacob of the twelve patriarchs.
Romans 4:11
He only got circumcision as a sign or seal of the righteousness which belonged to his faith as an uncircumcised man. The object of this was to make him the father of all who believe as uncircumcised persons and thus have righteousness counted to them,