Charles Ellicott Commentary Exodus 7:4

"But Pharaoh will not hearken unto you, and I will lay my hand upon Egypt, and bring forth my hosts, my people the children of Israel, out of the land of Egypt by great judgments." — Exodus 7:4 (ASV)

Pharaoh will not listen to you, that I may lay. —Hebrew, Pharaoh will not listen to you, and I will lay. No relation of effect and cause is asserted here as existing between the two clauses, which are coordinate.

My armies, and my people. Rather, my armies, my people. The two expressions are in apposition—the second exegetical of the first.

Great judgments. —See the comment on Exodus 6:6.