After Moses and Aaron left Pharaoh, Moses cried out to the LORD about the frogs he had brought on Pharaoh.
And the LORD did what Moses asked.1 The frogs died in the houses, in the courtyards and in the fields.
References for Exodus 8:13
They were piled into heaps, and the land reeked of them.
But when Pharaoh saw that there was relief,2 he hardened his heart3 and would not listen to Moses and Aaron, just as the LORD had said.
References for Exodus 8:15