Moses
Exodus 3:19BSB·traditional attribution

But I know that the king of Egypt will not allow you to go unless a mighty hand compels him.

John Calvin Reformed @genevareformer

19. And I am sure that the king of Egypt. God forearms his people, lest, suffering a repulse at their first onset, they should retire, and abandon in despair the work enjoined to them. It was, indeed, a hard thing to hear that their expedition would be vain; and that they might as well address themselves to the trunk of a tree, since there was...

Matthew Henry Presbyterian @wholebiblehenry

Moses is here more particularly instructed in his work, and informed beforehand of his success. 1. He must deal with the elders of Israel, and raise their expectation of a speedy removal to Canaan, Exo 3:16, Exo 3:17. He must repeat to them what God had said to him, as a faithful ambassador.

Commenting on Exodus 3:16-22

John Gill Reformed Baptist @doctorgill

And I am sure that the king of Egypt will not let you go,.... Or "but" (c) "I am sure", &c. though so reasonable a request was made him, yet it would not be granted; this is observed to them, that they might not be discouraged when he should refuse to dismiss them, which the omniscient God knew beforehand, and acquaints them with it, that...