John Gill Commentary Numbers 22:15

"And Balak sent yet again princes, more, and more honorable than they." — Numbers 22:15 (ASV)

And Balak sent yet again princes more, and more honourable
than they .
] More in number, and greater in quality, princes of the first rank in his court; supposing that Balaam thought he was not treated with respect enough, they being princes of the meaner sort, and but few, that were sent unto him before, which he imagined was the reason, at least one reason, why he refused to come with them; persons of Balaam's character in those days being highly revered.