Moses
Exodus 10:20ESV·traditional attribution

But the LORD hardened Pharaoh’s heart, and he did not let the people of Israel go.

Matthew Henry Presbyterian

Here is, I. The invasion of the land by the locusts - God's great army, Joe 2:11. God bids Moses stretch out his hand (Exo 10:12), to beckon them, as it wee (for they came at a call), and he stretched forth his rod, Exo 10:13. Compare Exo 9:22 23.

Commenting on Exodus 10:12-20

John Gill Reformed Baptist

And the Lord said unto Moses,.... About the eleventh day of the month Abib: stretch out thine hand toward heaven; where the luminaries are, and from whence light comes: that there may be darkness over the land of Egypt, even darkness which may be felt; that is, what caused it, the gross vapours and thick fogs; for otherwise darkness itself, being a privation of light...

Keil & Delitzsch Lutheran

Exo 10:18-20 To show the hardened king the greatness of the divine long-suffering, Moses prayed to the Lord, and the Lord cast the locusts into the Red Sea by a strong west wind. The expression “Jehovah turned a very strong west wind” is a concise form, for “Jehovah turned the wind into a very strong west wind.” The fact that locusts do perish in the...

Commenting on Exodus 10:18-20