In Context

2 and Sarah conceiveth, and beareth a son to Abraham, to his old age, at the appointed time that God hath spoken of with him;

3 and Abraham calleth the name of his son who is born to him, whom Sarah hath born to him — Isaac;

4 and Abraham circumciseth Isaac his son, being a son of eight days, as God hath commanded him.

5 And Abraham is a son of a hundred years in Isaac his son being born to him,

6 and Sarah saith, 'God hath made laughter for me; every one who is hearing laugheth for me.'

7 She saith also, 'Who hath said to Abraham, Sarah hath suckled sons, that I have born a son for his old age?'

Genesis 21:5 in Other Translations