Why did God allow Hagar to get pregnant by Abraham at the time it happened, while Sarah could not?

Genesis 16:1 - 5

MSG - ¹ Sarai, Abram's wife, hadn't yet produced a child. She had an Egyptian maid named Hagar. Sarai said to Abram, "God has not seen fit to let me have a child. Sleep with my maid. Maybe I can get a family from her." Abram agreed to do what Sarai said. ³ So Sarai, Abram's wife, took her Egyptian maid Hagar and gave her to her husband Abram as a wife. Abram had been living ten years in Canaan when this took place. He slept with Hagar and she got pregnant. When Hagar learned she was pregnant, she looked down on her mistress.

Clarify • Share • Report • Asked August 31 2015 • chika Morkah