Albert Barnes Commentary 2 Kings 7:12

"And the king arose in the night, and said unto his servants, I will now show you what the Syrians have done to us. They know that we are hungry; therefore are they gone out of the camp to hide themselves in the field, saying, When they come out of the city, we shall take them alive, and get into the city." — 2 Kings 7:12 (ASV)

His servants - That is, “high officers of the household,” not mere domestics.

I will show you what the Syrians have done - Jehoram sees in the deserted camp a stratagem like that connected with the taking of Ai (Joshua 8:3–19). The suspicion was a very natural one, since the Israelites knew of no reason why the Syrians should have raised the siege.