1 Kings 2:29,30

Go, fall upon him Namely if he will not come out from thence, as I foresee he will not. Thus saith the king, Come forth That the king gave this command, though it be not mentioned before, is evident, both from the nature of the thing, for Solomon would not pollute the altar without necessity, and from Benaiah's affirmation of it; for why should he tell a lie without a cause? It appears, also, from his returning to the king for new orders, upon Joab's resolution not to come out thence, He said, Nay, but I will die here For he supposed, either that Solomon would not defile that place with his blood, but would spare him for his respect to it, as he had done Adonijah; or, he had a superstitious conceit, that his dying there might give his guilty and miserable soul some advantage.