Exodus 1:12
11 So they put foremen over the Israelites to oppress them with hard labor. As a result they built Pithom and Rameses as store cities for Pharaoh. 12 But the more the Egyptians oppressed them, the more they multiplied and spread. As a result the Egyptians loathed the Israelites, 13 and they made the Israelites serve rigorously. 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.
Numbers 22:3
2 Balak son of Zippor saw all that the Israelites had done to the Amorites. 3 And the Moabites were greatly afraid of the people, because they were so numerous. The Moabites were sick with fear because of the Israelites. 4 So the Moabites said to the elders of Midian, “Now this mass of people will lick up everything around us, as the bull devours the grass of the field.” Now Balak son of Zippor was king of the Moabites at this time.
Notes and References
"... “Felt a disgust at the children of Israel.” This is the first of a string of terms in the Balaam story that are also found in the E account of the exodus from Egypt. Compare Exodus 1:12 ..."
Friedman, Richard Elliott The Bible with Sources Revealed: A New View Into the Five Books of Moses (p. 280) Harper San Francisco, 2005