Genesis 21:4
and when he was eight days old he circumcised him as God had told him to.
Open English Bible (US)
In The King James Version
And Abraham circumcised his son Isaac being eight days old, as God had commanded him.
In Context
5Abraham was a hundred years old when his son Isaac was born.
Cross References
Genesis 17:10This is my covenant, which you must keep, between me and you and your descendants after you: every male among you must be circumcised.
Luke 1:59A week later they met to circumcise the child, and were about to call him Zechariah after his father,
John 7:22But that is why Moses has instituted circumcision among you – not, indeed, that it began with him, but with our ancestors – and that is why you circumcise even on a Sabbath.
Matthew Henry on Genesis 21:2-9
The Birth of Isaac. ( b. c. 1897.) 1 And the Lord visited Sarah as he had said, and the Lord did unto Sarah as he had spoken. 2 For Sarah conceived, and bare Abraham a son in his old age, at the set time of which God had spoken to him. 3 And Abraham called the name of his son that was born unto him, whom Sarah bare to him, Isaac. 4 And Abraham circumcised his son Isaac being eight days old, as God had commanded him. 5 And Abraham was an hundred years old, when his son Isaac was born unto him. 6 And Sarah said, God… Read the whole commentary →