When Saul tore off his clothes and lay naked (that is, without his royal garments), he unknowingly showed his true spiritual condition. God had stripped him of the kingship. Earlier passages explain this rejection (1 Samuel 13:14; 15:10–11, 23; see “Prophetic Sign Acts” Theme Note).
Is Saul also among the prophets?: In 1 Samuel 10:9–13, Saul was rising as God’s chosen king. Here, he is moving downward under the weight of God’s rejection.