John Gill Commentary Numbers 23:6

"And he returned unto him, and, lo, he was standing by his burnt-offering, he, and all the princes of Moab." — Numbers 23:6 (ASV)

And he returned unto him

Immediately, as soon as he was told what to say:

and, lo, he stood by his burnt sacrifice ;

continued in his devotions, hoping for success, and waiting for Balaam's return:

he and all the princes of Moab ;

not only those that were sent to Balaam, but perhaps all the princes of the kingdom who were got together on this occasion, and by reason of the imminent danger they apprehended the nation was in on account of Israel.