Moses
Numbers 23:4ESV·traditional attribution

and God met Balaam. And Balaam said to him, “I have arranged the seven altars and I have offered on each altar a bull and a ram.”

John Calvin Reformed @genevareformer

4. And God met Balaam. It is wonderful that God should have determined to have anything in common with the pollutions of Balaam; since there is no communion between light and darkness, and He detests all association with demons; but, however hateful to God the impiety of Balaam was, this did not prevent Him from making use of him in this particular act.

Matthew Henry Presbyterian @wholebiblehenry

Here is, I. Great preparation made for the cursing of Israel. That which was aimed at was to engage the God of Israel to forsake them, and either to be on Moab's side or to stand neuter. O the sottishness of superstition, to imagine that God will be at men's beck!

Commenting on Numbers 23:1-12

John Gill Reformed Baptist @doctorgill

And God met Balaam,.... Not in a kind and gracious manner; not out of any respect to him and his offerings; not to indulge him with any spiritual communion with him; nor to communicate his mind and will to him as a friend of his; not to gratify his desires, and grant the request of the king of Moab, or to smile upon and succeed...