John 7:22

Because of this Moses gave you circumcision (not because it is of Moses, but of the fathers,) and you circumcise a man on the sabbath day.

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 you shall keep, between Me and you and your seed after you. Every male child among you shall be circumcised.

Romans 4:9-11

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

Galatians 3:17

And I say this, A covenant having been ratified by God in Christ, the Law (coming into being four hundred and thirty years after) does not annul the promise, so as to abolish it.

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 you shall keep, between Me and you and your seed after you. 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
Is this blessedness then on the circumcision only, or on the uncircumcision also? For we say that faith was reckoned to Abraham for righteousness.
Galatians 3:17
And I say this, A covenant having been ratified by God in Christ, the Law (coming into being four hundred and thirty years after) does not annul the promise, so as to abolish it.

General references

Genesis 21:4
And Abraham circumcised his son Isaac when he was 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 a sabbath when Jesus made the clay and opened his eyes.