Genesis 21 4
Abraham circumcised him when Isaac was eight days old, following God's command.
Compare with other 3 random translations
GW Genesis 21:4When Isaac was eight days old, Abraham circumcised him as God had commanded.
AMP Genesis 21:4So Abraham circumcised his son Isaac when he was eight days old, just as God had commanded him.
NAS Genesis 21:4Then Abraham circumcised his son Isaac when he was eight days old, as God had commanded him.