Exodus 9:33-35

New Century Version

³³ Moses left the king and went outside the city. He raised his hands to the Lord, and the thunder and hail stopped. The rain also stopped falling to the ground. ³⁴ When the king saw that the rain, hail, and thunder had stopped, he sinned again, and he and his officers became stubborn. ³⁵ So the king became stubborn and refused to let the Israelites go, just as the Lord had said through Moses.