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 3:7

3:7 The Lord said, “I have surely seen the affliction of my people who are in Egypt. I have heard their cry because of their taskmasters, for I know their sorrows.

Exodus 20:2

20:2 “I, the Lord, am your God, who brought you from the land of Egypt, from the house of slavery.

Psalms 78:43-51

78:43 when he performed his awesome deeds in Egypt,

and his acts of judgment in the region of Zoan.

78:44 He turned their rivers into blood,

and they could not drink from their streams.

78:45 He sent swarms of biting insects against them,

as well as frogs that overran their land.

78:46 He gave their crops to the grasshopper,

the fruit of their labor to the locust.

78:47 He destroyed their vines with hail,

and their sycamore-fig trees with driving rain.

78:48 He rained hail down on their cattle,

and hurled lightning bolts down on their livestock.

78:49 His raging anger lashed out against them,

He sent fury, rage, and trouble

as messengers who bring disaster.

78:50 He sent his anger in full force;

he did not spare them from death;

he handed their lives over to destruction.

78:51 He struck down all the firstborn in Egypt,

the firstfruits of their reproductive power in the tents of Ham.