Exodus 1:17-19

17 But the women had the fear of God, and did not do as the king of Egypt said, but let the male children go on living.

18 And the king of Egypt sent for the women, and said to them, Why have you done this, and let the male children go on living?

19 And they said to Pharaoh, Because the Hebrew women are not like the Egyptian women, for they are strong, and the birth takes place before we come to them.