Exodus 1:13-15

13And the Egyptians made the children of Israel serve with harshness;

14and they embittered their life with hard labour in clay and bricks, and in all manner of labour in the field: all their labour with which they made them serve was with harshness.

15And the king of Egypt spoke to the Hebrew midwives — of whom the name of the one was Shiphrah, and the name of the other was Puah —