that
Genesis 16:2-4
2
And Sarai said unto Abram, Behold now, the LORD hath restrained me from bearing: I pray thee, go in unto my maid; it may be that I may obtain children by her. And Abram hearkened to the voice of Sarai.
3
And Sarai Abram's wife took Hagar her maid the Egyptian, after Abram had dwelt ten years in the land of Canaan, and gave her to her husband Abram to be his wife.
4
And he went in unto Hagar, and she conceived: and when she saw that she had conceived, her mistress was despised in her eyes.
Genesis 16:15-4
Genesis 21:1
And the LORD visited Sarah as he had said, and the LORD did unto Sarah as he had spoken.
Genesis 21:2
For Sarah conceived, and bare Abraham a son in his old age, at the set time of which God had spoken to him.
Genesis 21:10
Wherefore she said unto Abraham, Cast out this bondwoman and her son: for the son of this bondwoman shall not be heir with my son, even with Isaac.