Suddenly he stood up, strode over to a far corner of his office, and pulled out a drawer on a file cabinet. He took out a silver crucifix which he brandished as he came toward me. And in a completely different, almost cracked voice, he shouted, "Do you know what this is?" I said, "Yes, of course." Speaking very quickly and passionately, he told me that he believed in God, that it was his conviction that no man was so guilty that God did not forgive him, but in order for that to happen a man must repent and in so doing become like a child whose heart is open and ready to embrace all. […] He was waving his crucifix almost directly over my head. (2.1.10)
Meursault’s description reveals that the magistrate—though he tries to be threatening—comes off as ridiculous. If he’s "waving his crucifix almost directly over [Meursault’s] head," it looks like he’s brandishing it as a weapon. Um. That's not super-scary.