Genesis 17:23

And Abraham took Ishmael, his son, and all whose birth had taken place in his house, and all his servants whom he had made his for a price, every male of his house, and on that very day he gave them circumcision in the flesh of their private parts as God had said to him.

Genesis 17:10-14

And this is the agreement which you are to keep with me, you and your seed after you: every male among you is to undergo circumcision.

Genesis 17:26-27

Abraham and Ishmael, his son, underwent circumcision on that very day.

Genesis 18:19

For I have made him mine so that he may give orders to his children and those of his line after him, to keep the ways of the Lord, to do what is good and right: so that the Lord may do to Abraham as he has said.

Genesis 34:24

Then all the men of the town gave ear to the words of Hamor and Shechem his son; and every male in the town underwent circumcision.

Joshua 5:2-9

At that time the Lord said to Joshua, Make yourself stone knives and give the children of Israel circumcision a second time.

Psalm 119:60

I was quick to do your orders, and let no time be wasted.

Proverbs 27:1

Do not make a noise about tomorrow, for you are not certain what a day's outcome may be.

Ecclesiastes 9:10

Whatever comes to your hand to do with all your power, do it because there is no work, or thought, or knowledge, or wisdom in the place of the dead to which you are going.

Acts 16:3

Paul had a desire for him to go with him, and he gave him circumcision because of the Jews who were in those parts: for they all had knowledge that his father was a Greek.

Romans 2:25-29

It is true that circumcision is of use if you keep the law, but if you go against the law it is as if you had it not.

Romans 4:9-12

Is this blessing, then, for the circumcision only, or in the same way for those who have not circumcision? for we say that the faith of Abraham was put to his account as righteousness.

1 Corinthians 7:18-19

If any man who is a Christian has had circumcision, let him keep so; and if any man who is a Christian has not had circumcision, let him make no change.

Galatians 5:6

Because in Christ Jesus, having circumcision or not having circumcision are equally of no profit; but only faith working through love.

Galatians 6:15

For having circumcision is nothing, and not having circumcision is nothing, but only a new order of existence.

Treasury of Scripture Knowledge

Summary

And Abraham took Ishmael his son, and all that were born in his house, and all that were bought with his money, every male among the men of Abraham's house; and circumcised the flesh of their foreskin in the selfsame day, as God had said unto him.

Bible References

General references

Genesis 6:22
And all these things Noah did; as God said, so he did.
Genesis 22:3
And Abraham got up early in the morning, and made ready his ass, and took with him two of his young men and Isaac, his son, and after the wood for the burned offering had been cut, he went on his way to the place of which God had given him word.
Genesis 26:5
Because Abraham gave ear to my voice and kept my words, my rules, my orders, and my laws.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain