Genesis 21:4

Young's Literal Translation 1862

and Abraham circumciseth Isaac his son, `being' a son of eight days, as God hath commanded him.

Cross References

Exodus 12:48

`And when a sojourner sojourneth with thee, and hath made a passover to Jehovah, every male of his `is' to be circumcised, and then he doth come near to keep it, and he hath been as a native of the land, but any uncircumcised one doth not eat of it;

Leviticus 12:3

and in the eighth day is the flesh of his foreskin circumcised;

Luke 1:59

And it came to pass, on the eighth day, they came to circumcise the child, and they were calling him by the name of his father, Zacharias,

Luke 1:6

and they were both righteous before God, going on in all the commands and righteousnesses of the Lord blameless,

Luke 2:21

And when eight days were fulfilled to circumcise the child, then was his name called Jesus, having been so called by the messenger before his being conceived in the womb.

Acts 7:8

`And He gave to him a covenant of circumcision, and so he begat Isaac, and did circumcise him on the eighth day, and Isaac `begat' Jacob, and Jacob -- the twelve patriarchs;

Deuteronomy 12:32

The whole thing which I am commanding you -- it ye observe to do; thou dost not add unto it, nor diminish from it.