Exodus 1:19-23

And the midwives said unto Pharaoh, Because the Hebrew women are not as the Egyptian women; for they are lively, and are delivered ere the midwives come in unto them.

Therefore God dealt well with the midwives: and the people multiplied, and waxed very mighty.

And it came to pass, because the midwives feared God, that he made them houses.

And Pharaoh charged all his people, saying, Every son that is born ye shall cast into the river, and every daughter ye shall save alive.