Those about Benhadad advised him to change his ground. They take it for granted that it was not Israel, but Israel's gods, that beat them; but they speak very ignorantly of Jehovah. They supposed that Israel had many gods, to whom they ascribed limited power within a certain district; thus vain were the Gentiles in their imaginations concerning God. The greatest wisdom in worldly concerns is often united with the most contemptible folly in the things of God.
SDA Bible Commentary (limited)
Volume 1-7
25. Thou hast lost. The Syrian losses must have been unusually severe, requiring a replacement of practically the entire army. War places a low estimate upon human life or treasure.