Matthew Poole and continuators on Numbers 22:8

8 And he said unto them, Lodge here this night , and I will bring you word again, as the LORD shall speak unto me: and the princes of Moab abode with Balaam.

The night was the time when God used to reveal his mind by dreams. Here is the first discovery of his wickedness, that he takes time to consider, and doth his indeavour to effect, that wicked motion of cursing the Israelites, which he should have rejected and abhorred at the first mention of it.

Heb. Iehovah, the true God, whom he here mentions, either for his own greater reputation, as if he consulted not with inferiour spirits, as other soothsayers did, but with the supreme God, or rather because this was Israels God, and the onely possible way of ruining them was by engaging their God against them, as the known way of the Romans and other Heathens when they went to besiege any City, they used inchantments to call forth that God under whose peculiar protection they were.

And of Midian too, as is manifest from ver. 7. which was needless to repeat here.