Genesis 21:3

3 And Abraam called the name of his son that was born to him, whom Sarrha bore to him, Isaac.

Genesis 21:3 Meaning and Commentary

Genesis 21:3

And Abraham called the name of his son that was borne unto
him, whom Sarah bare to him, Isaac.
] Which is the name he was directed to give him, ( Genesis 17:19 ) ; and he remembers the order, and is obedient to it; the reason of which name, which signifies laughter, was on account of his laughing for joy at the promise made him, as well as there might be afterwards a further reason for it, from Sarah's laughing through distrust; and it might presignify the joy and laughter that would be expressed by others at his birth; and perhaps also that he would be the object of the laughter and derision of his brother; such a number of events agreeing with his name.

Genesis 21:3 In-Context

1 And the Lord visited Sarrha, as he said, and the Lord did to Sarrha, as he spoke.
2 And she conceived and bore to Abraam a son in old age, at the set time according as the Lord spoke to him.
3 And Abraam called the name of his son that was born to him, whom Sarrha bore to him, Isaac.
4 And Abraam circumcised Isaac on the eighth day, as God commanded him.
5 And Abraam was a hundred years old when Isaac his son was born to him.

The Brenton translation of the Septuagint is in the public domain.