4 And circumcising is Abraham Isaac, his son, at eight days of age as the Elohim had instructed him.
Genesis 21:4 Cross References - CLV
Genesis 17:10-12
10 This is My covenant, which you shall keep between Me and you and your seed after you for their generations: Circumcise to yourselves every male.
11 And circumcised shall you be in the flesh of your foreskin. And it comes to be for a sign of the covenant between Me and you.
12 And a son of eight days shall be circumcised by you, every male of your generations, homeborn or acquired with money from any foreigner, he who is not of your seed.
Exodus 12:48
48 In case a sojourner is sojourning with you and makes a passover to Yahweh, every make of his is to be circumcised, and then he may draw near to make it, and he will become as a native of the land. Yet anyone uncircumcised, he shall not eat of it.
Leviticus 12:3
3 On the eighth day the flesh of his foreskin shall be circumcised.
Deuteronomy 12:32
32 Every word which I am enjoining on you today, you shall observe to obey it. You shall neither add to it, nor shall you subtract from it.
Luke 1:6
6 Now they were both just in front of God, going in all the precepts and just statutes of the Lord, blameless."
Luke 1:59
59 And it occurred on the eighth day, they came to circumcise the little boy, and they called him by the name of his father, Zechariah."
Luke 2:21
21 And when the eight days to His circumcising are fulfilled, His name also was called Jesus, which He was called by the messenger before His conception in the womb."
John 7:22-23
22 Therefore Moses has given you circumcision (not that it is of Moses, but that it is of the fathers) and on a sabbath you are circumcising a man."
23 If a man is getting circumcision on a sabbath lest the law of Moses may be annulled, am I raising your bile, seeing that I make a whole man sound on a sabbath?
Acts 7:8
8 And He gives him the covenant of circumcision. And thus he begets Isaac, and circumcised him on the eighth day, and Isaac Jacob, and Jacob the twelve patriarchs."