Moses
Numbers 22:6ESV·traditional attribution

Come now, curse this people for me, since they are too mighty for me. Perhaps I shall be able to defeat them and drive them from the land, for I know that he whom you bless is blessed, and he whom you curse is cursed.”

Matthew Henry Presbyterian @wholebiblehenry

The children of Israel have at length finished their wanderings in the wilderness, out of which they went up (Num 21:18), and are now encamped in the plains of Moab near Jordan, where they continued till they passed through Jordan under Joshua, after the death of Moses. Now we have here, I. The fright which the Moabites were in upon the approach of Israel, Num 22:2-4.

Commenting on Numbers 22:1-14

John Gill Reformed Baptist @doctorgill

And the elders of Moab, and the elders of Midian, departed,.... By which it appears that they were princes and nobles; for such the elders were, that were sent on this errand to Balaam; and that they were some of both people, Midian and Moab, that went upon it, see Num 22:14 which shows, that if they were not one people, under one king, which...

Jamieson-Fausset-Brown Reformed @jfbcommentary

Come . . . curse me this people--Among the heathen an opinion prevailed that prayers for evil or curses would be heard by the unseen powers as well as prayers for good, when offered by a prophet or priest and accompanied by the use of certain rites.