Ba of Seth is being sent, because he was meant to do more. He has more power than any other god, for he is the one protecting the boat of Re and repelling Apophis. Despite the fact that he is on the side of Re and he is good, his Ba must be restrained
(sAwt) 41. Precisely because of the factthat he is the strongest divinity and he has a double-sided nature, he is unpredictable