Genesis 21:4

Revised Standard Version (RSV-CI)

And Abraham circumcised his son Isaac when he was eight days old, as God had commanded him.

Cross References

Exodus 12:48

And when a stranger shall sojourn with you and would keep the passover to the Lord, let all his males be circumcised, then he may come near and keep it; he shall be as a native of the land. But no uncircumcised person shall eat of it.

Leviticus 12:3

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

Luke 1:59

And on the eighth day they came to circumcise the child; and they would have named him Zechariah after his father,

Luke 1:6

And they were both righteous before God, walking in all the commandments and ordinances of the Lord blameless.

Luke 2:21

And at the end of eight days, when he was circumcised, he was called Jesus, the name given by the angel before he was conceived in the womb.

Acts 7:8

And he gave him the covenant of circumcision. And so Abraham became the father of Isaac, and circumcised him on the eighth day; and Isaac became the father of Jacob, and Jacob of the twelve patriarchs.

Deuteronomy 12:32

“Everything that I command you shall be careful to do; you shall not add to it or take from it.