John 7:22

Moses therefore gave to you circumcision, (not because it is from Moses, but from the fathers) and ye on the sabbath circumcise a man.

Leviticus 12:3

And in the eighth day the flesh of his foreskin shall be circumcised.

Genesis 17:10-14

This is my covenant, which ye shall keep between me and you, and thy seed after thee; Every male-child among you shall be circumcised.

Romans 4:9-11

Cometh this blessedness then upon the circumcision only, or upon the uncircumcision also? For we say that faith was reckoned to Abraham for righteousness.

Galatians 3:17

And this I say, that the covenant that was confirmed before by God in Christ, the law, which was four hundred and thirty years after, cannot disannul, that it should make the promise of no effect.

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.

Bible References

Circumcision

Genesis 17:10
This is my covenant, which ye shall keep between me and you, and thy seed after thee; Every male-child among you shall be circumcised.
Leviticus 12:3
And in the eighth day the flesh of his foreskin shall be circumcised.
Romans 4:9
Cometh this blessedness then upon the circumcision only, or upon the uncircumcision also? For we say that faith was reckoned to Abraham for righteousness.
Galatians 3:17
And this I say, that the covenant that was confirmed before by God in Christ, the law, which was four hundred and thirty years after, cannot disannul, that it should make the promise of no effect.

General references

Genesis 21:4
And Abraham circumcised his son Isaac, being eight days old, as God had commanded him.
Leviticus 12:3
And in the eighth day the flesh of his foreskin shall be circumcised.
John 9:14
And it was the sabbath when Jesus made the clay, and opened his eyes.