Genesis 21:1

1 The LORD came to help Sarah and did for her what he had promised.

Genesis 21:1 Meaning and Commentary

Genesis 21:1

And the Lord visited Sarah as he had said
To Abraham, ( Genesis 17:16 Genesis 17:19 Genesis 17:21 ) ( Genesis 18:10 Genesis 18:14 ) ; in a way of mercy and kindness, by fulfilling his promise, giving strength to conceive and bear a child; see ( 1 Samuel 2:21 ) : and the Lord did unto Sarah as he had spoken;
which intends the same thing in different words; and the repetition is made to cause attention to God's fulfilment of his promise, who is always faithful to his word, even in things very difficult and seemingly impossible, as in the present case: hence the Targums of Jonathan and Jerusalem paraphrase it, God did a wonder or wonders for Sarah in causing her to conceive when she was so old, and in such circumstances as she was.

Genesis 21:1 In-Context

1 The LORD came to help Sarah and did for her what he had promised.

2 So she became pregnant, and at the exact time God had promised, she gave birth to a son for Abraham in his old age.

3 Abraham named his newborn son Isaac.

4 When Isaac was eight days old, Abraham circumcised him as God had commanded.

5 Abraham was 100 years old when his son Isaac was born.