Exodus 9:34

And the heart of Pharaoh was hardened,.... Instead of being softened, as it seemed to be when under the plague, it became harder and harder when delivered from it:

neither would he let the children…

With the plague of hail begins the last series of plagues, which differ from the former both in their severity and their effects. Each produced a temporary, but real, change in Pharaoh’s feelings. Exo…

He sinned yet more, and hardened his heart - These were merely acts of his own; "for who can deny," says Mr. Psalmanazar, "that what God did on Pharaoh was much more proper to soften than to harden…

The threatened plague of hail is here summoned by the powerful hand and rod of Moses (Exo 9:22, Exo 9:23), and it obeys the summons, or rather the divine command; for fire and hail fulfil God's word,…

hardened his heart made his heart stubborn (lit. heavy), J's regular word: see on Exo 7:13.

35 (E). was hardened waxed strong(or firm), the word used by E: cf. Exo 10:20; Exo 10:27; Exo 4:21 b.

as…