John 7:22

Moses hath given you circumcision, (not that it is from Moses, but from the fathers;) and ye on the sabbath circumcise a man.

Romans 4:9-11

Doth this blessedness belong to the circumcised alone, or to the uncircumcised also? For we are saying that Abrahams faith was accounted as righteousness.

Galatians 3:17

And what I mean is this; that a covenant that was before ratified by God, the Law, which came four hundred and thirty years after, cannot annul, so as to make void the promise;

Treasury of Scripture Knowledge

Summary

Moses therefore gave unto you circumcision; (not because it is of Moses, but of the fathers;) and ye on the sabbath day circumcise a man.

Circumcision

General references

Bible References

Circumcision

Romans 4:9
Doth this blessedness belong to the circumcised alone, or to the uncircumcised also? For we are saying that Abrahams faith was accounted as righteousness.
Galatians 3:17
And what I mean is this; that a covenant that was before ratified by God, the Law, which came four hundred and thirty years after, cannot annul, so as to make void the promise;

General references

John 9:14
And the day on which Jesus made the clay and opened his eyes was the sabbath.