Moses
Exodus 18:10BSB·traditional attribution

Jethro declared, “Blessed be the LORD, who has delivered you from the hand of the Egyptians and of Pharaoh, and who has delivered the people from the hand of the Egyptians.

John Calvin Reformed @genevareformer

10. And Jethro said, Blessed. Hence it appears that although the worship of God was then everywhere profaned by strange additions, yet Jethro was not so devoted to superstition as not to acknowledge and honor the true God. Nevertheless, the comparison which he subjoins, that “Jehovah is greater than all gods,” implies that he was not pure and free from all error.

Matthew Henry Presbyterian @wholebiblehenry

Observe here, I. The kind greeting that took place between Moses and his father-in-law, Exo 18:7. Though Moses was a prophet of the Lord, a great prophet, and king in Jeshurun, yet he showed a very humble respect to his father-in-law.

Commenting on Exodus 18:7-12

John Gill Reformed Baptist @doctorgill

Now I know that the Lord is greater than all gods,.... He knew the Lord before, and that he was the only true God, and greater than all that were so called; but now he had a fresh instance of it, a clear proof and demonstration of it, and so more plainly and fully knew it, and was assured of it, that he was greater...