John 7:22

But that is why Moses has instituted circumcision among you- -not, indeed, that it began with him, but with our ancestors--and that is why you circumcise even on a Sabbath.

Romans 4:9-11

Is this blessing, then, pronounced upon the circumcised only or upon the uncircumcised as well? We say that-'Abraham's faith was regarded by God as righteousness.'

Galatians 3:17

My point is this--An agreement already confirmed by God cannot be canceled by the Law, which came four hundred and thirty years later, so as to cause the promise to be set aside.

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
Is this blessing, then, pronounced upon the circumcised only or upon the uncircumcised as well? We say that-'Abraham's faith was regarded by God as righteousness.'
Galatians 3:17
My point is this--An agreement already confirmed by God cannot be canceled by the Law, which came four hundred and thirty years later, so as to cause the promise to be set aside.

General references

John 9:14
Now it was a Sabbath when Jesus made the clay and gave him his sight.