9 Then it happened when he turned his back to leave e e Samuel , God changed his heart ; and all those signs came about on that day . 10 When they came to the hill there , behold , a group of prophets met him; and the Spirit of God came upon him mightily , so that he prophesied among them.
Matthew Henry's Commentary on 1 Samuel 10:9-10
Commentary on 1 Samuel 10:9-16
(Read 1 Samuel 10:9-16)
The signs Samuel had given Saul, came to pass punctually; he found that God had given him another heart, another disposition of mind. Yet let not an outward show of devotion, and a sudden change for the present, be too much relied on; Saul among the prophets was Saul still. His being anointed was kept private. He leaves it to God to carry on his own work by Samuel, and sits still, to see how the matter will fall.