Moses
Exodus 6:13BSB·traditional attribution

Then the LORD spoke to Moses and Aaron and gave them a charge concerning both the Israelites and Pharaoh king of Egypt, to bring the Israelites out of the land of Egypt.

John Calvin Reformed @genevareformer

13. And the Lord spake unto Moses. I translate it, “the Lord had spoken unto Moses;” because reference is here made to the commencement of his calling, and, therefore, the sense will be more accurately rendered by the perfect past tense; for he repeats, what he had already said, that he and Aaron his brother had not acted rashly, but had been commissioned by the command of God.

Matthew Henry Presbyterian @wholebiblehenry

Here, I. God sends Moses the second time to Pharaoh (Exo 6:11) upon the same errand as before, to command him, at his peril, that he let the children of Israel go. Note, God repeats his precepts before he begins his punishments.

Commenting on Exodus 6:10-13

John Gill Reformed Baptist @doctorgill

These be the heads of their father's houses,.... Not of the families of Moses and Aaron, but of the children of Israel, though only the heads of three tribes are mentioned; and some think that these three are taken notice of, to show that they were not rejected of God, though they seem to be rather cursed than blessed by Jacob; and that though they...