Numbers 23:1 (BSB)

Then Balaam said to Balak, “Build for me seven altars here, and prepare for me seven bulls and seven rams.”

From Numbers 23. Also in the ESV.

Commentary on Numbers 23:1

• John Calvin (Reformed), Calvin's Commentaries on Numbers 23:1: 1. Build me here seven altars. We more positively conclude from hence that this degenerate prophet had been by no means wont to prophesy in accordance with pure revelations from God, but that the art of divination, in which he boasted, had some affinity to magical exorcisms, and was infected with many errors and deceptions.
• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Numbers 23:1-12: 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!
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Numbers 23:1: And Balaam said unto Balak,.... When upon one of the high places of Baal, and after having taken a view of the people of Israel as they lay encamped: build me here seven altars; this was purely Heathenish; for not only the Israelites after the law of Moses had but one altar, but the patriarchs before that never built but one altar at a time.
• Geneva Bible Notes (Reformed), Geneva Bible Study Notes on Numbers 23:1: And it came to pass on the morrow, that Balak took Balaam, and brought him up into the high places of Baal, that thence he might see the utmost [part] of the people. (t) Where the idol Baal was worshipped.