Moses
Numbers 20:19ESV·traditional attribution

And the people of Israel said to him, “We will go up by the highway, and if we drink of your water, I and my livestock, then I will pay for it. Let me only pass through on foot, nothing more.”

John Calvin Reformed @genevareformer

19. And the children of Israel said unto him. It is doubtful whether or not the ambassadors were sent a second time, in order to remove all unjust suspicions, and to appease the ferocity (of the Edomites.) It is probable, however, that we have the relation of what was done in one and the same expedition.

Matthew Henry Presbyterian @wholebiblehenry

We have here the application made by Israel to the Edomites. The nearest way to Canaan from the place where Israel now lay encamped was through the country of Edom. Now, I. Moses sends ambassadors to treat with the king of Edom for leave to pass through his country, and gives them instructions what to say, Num 20:14-17. 1.

Commenting on Numbers 20:14-21

John Gill Reformed Baptist @doctorgill

And he said, thou shall not go through,.... Which is an absolute and peremptory denial: and Edom came out against him with much people, and with a strong hand; the king raised the militia of his country, and came at the head of a powerful army to hinder their passing into it; being fearful and jealous, lest such a large body as they were should...