Genesis 21:4

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

Genesis 21:4 Meaning and Commentary

Genesis 21:4

And Abraham circumcised his son Isaac, being eight days old as,
God had commanded him.
] ( Genesis 17:12 ) , and was the first that we read of that was circumcised on that day, according to the divine precept, which Abraham strictly observed; for though this was the son of the promise, and of his old age, for whom he had the most affectionate regard, yet he administered this bloody ordinance on him; nor did he defer it beyond the time, and was himself the operator, as it seems; all which shows his strict regard, and ready and cheerful obedience to the command of God.

Genesis 21:4 In-Context

2 Sarah conceived and bore Abraham a son in his old age, at the time of which God had spoken to him.
3 Abraham gave the name Isaac to his son whom Sarah bore him.
4 And Abraham circumcised his son Isaac when he was eight days old, as God had commanded him.
5 Abraham was a hundred years old when his son Isaac was born to him.
6 Now Sarah said, "God has brought laughter for me; everyone who hears will laugh with me."