Judgment Day Psychology

At first glance it seemed to me like some big event was about to occur. A horn usually symbolizes as a signal of some sort and the man blowing this horn was greatly bigger than the others. Their is different shades of green showing some sense of flow. Above this huge man is a sun like symbol striking down what seems to be lighting. The large man also has a pair of wings and is holding a key in his left hand. A key usually represents some sort of answer. At that point it was clear this man was the focal point of this painting. He seems to be relaying a message which from the tittle of the piece, I would say the signal was to represent "Judgment Day". The man with the wings also seems to be holding some sort of key representing that he is the