Exodus 1:13-14

1:13 and they made the Israelites serve rigorously. 1:14 They made their lives bitter by hard service with mortar and bricks and by all kinds of service in the fields. Every kind of service the Israelites were required to give was rigorous.

Exodus 2:23

The Call of the Deliverer

2:23 During that long period of time the king of Egypt died, and the Israelites groaned because of the slave labor. They cried out, and their desperate cry because of their slave labor went up to God.