Moses
Exodus 8:15BSB·traditional attribution

When Pharaoh saw that there was relief, however, he hardened his heart and would not listen to Moses and Aaron, just as the LORD had said.

John Calvin Reformed @genevareformer

15. Blot when Pharaoh saw. Hence it appears that the wretched tyrant, like a winding serpent, twisted and turned his mind to crooked counsels; for when he was trembling beneath the present feeling of God’s power, he dared not obstinately resist any longer; he only sought a little breathing time; now, being freed from fear, he returns to his former contumacy.

Matthew Henry Presbyterian @wholebiblehenry

Pharaoh is here first threatened and then plagued with frogs, as afterwards, in this chapter, with lice and flies, little despicable inconsiderable animals, and yet by their vast numbers rendered sore plagues to the Egyptians. God could have plagued them with lions, or bears, or wolves, or with vultures or other birds of prey; but he chose to do it by these contemptible instruments. 1.

Commenting on Exodus 8:1-15

John Gill Reformed Baptist @doctorgill

And the Lord said unto Moses,.... On the twenty seventh day of the month, according to Bishop Usher, the same day the flogs were removed; no warning is given him of the next plague, at least there is no account of any: say unto Aaron, stretch out thy rod, and smite the dust of the land; in some one part of the land, that place...