Genesis 21:4

4 Avraham circumcised his son Yitz'chak when he was eight days old, as God had ordered him to do.

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 Avraham a son in his old age, at the very time God had said to him.

3 Avraham called his son, born to him, whom Sarah bore to him, Yitz'chak.

4 Avraham circumcised his son Yitz'chak when he was eight days old, as God had ordered him to do.

5 Avraham was one hundred years old when his son Yitz'chak [laughter] was born to him.

6 Sarah said, "God has given me good reason to laugh; now everyone who hears about it will laugh with me."