John 7:22

Moses therefore gave unto you circumcision: not because it is of Moses, but of the fathers. And yet ye on the Sabbath day circumcise a man.

Leviticus 12:3

And in the eighth day the flesh of the child's foreskin shall be cut away.

Genesis 17:10-14

This is my covenant which ye shall keep between me and you and thy seed after thee: that ye circumcise all your men children.

Romans 4:9-11

Came this blessedness then upon the circumcised or upon the uncircumcised? We say verily how that faith was reckoned to Abraham, for righteousness.

Galatians 3:17

This I say, that the law which began afterward, beyond four hundred and thirty years, doth not disannul the testament, that was confirmed afore of God unto Christ ward, to make the promise of none 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: that ye circumcise all your men children.
Leviticus 12:3
And in the eighth day the flesh of the child's foreskin shall be cut away.
Romans 4:9
Came this blessedness then upon the circumcised or upon the uncircumcised? We say verily how that faith was reckoned to Abraham, for righteousness.
Galatians 3:17
This I say, that the law which began afterward, beyond four hundred and thirty years, doth not disannul the testament, that was confirmed afore of God unto Christ ward, to make the promise of none effect.

General references

Genesis 21:4
and Abraham circumcised Isaac his son when he was eight days old, as God commanded him.
Leviticus 12:3
And in the eighth day the flesh of the child's foreskin shall be cut away.
John 9:14
For it was the Sabbath day when Jesus made the clay, and opened his eyes.