5 After that you will come to Gibeah, the hill of God, where an armed force of the Philistines is stationed: and when you come to the town, you will see a band of prophets coming down from the high place with instruments of music before them; and they will be acting like prophets: 6 And the spirit of the Lord will come on you with power, and you will be acting like a prophet with them, and will be changed into another man. 7 And when these signs come to you, see that you take the chance which is offered you; for God is with you. 8 Then you are to go down before me to Gilgal, where I will come to you, for the offering of burned offerings and peace-offerings: go on waiting there for seven days till I come to you and make clear to you what you have to do.
9 And it came about, that when he went away from Samuel, God gave him a changed heart: and all those signs took place that day. 10 And when they came to Gibeah, a band of prophets came face to face with him; and the spirit of God came on him with power and he took his place among them as a prophet. 11 Now when Saul's old friends saw him among the band of prophets, the people said to one another, What has come to Saul, the son of Kish? Is even Saul among the prophets? 12 And one of the people of that place said in answer, And who is their father? So it became a common saying, Is even Saul among the prophets? 13 Then going away from the prophets, he came to the house.
Matthew Henry's Commentary on 1 Samuel 10:5-13
Commentary on 1 Samuel 10:1-8
(Read 1 Samuel 10:1-8)
The sacred anointing, then used, pointed at the great Messiah, or Anointed One, the King of the church, and High Priest of our profession, who was anointed with the oil of the Spirit, not by measure, but without measure, and above all the priests and princes of the Jewish church. For Saul's further satisfaction, Samuel gives him some signs which should come to pass the same day. The first place he directs him to, was the sepulchre of one of his ancestors; there he must be reminded of his own mortality, and now that he had a crown before him, must think of his grave, in which all his honour would be laid in the dust. From the time of Samuel there appears to have been schools, or places where pious young men were brought up in the knowledge of Divine things. Saul should find himself strongly moved to join with them, and should be turned into another man from what he had been. The Spirit of God changes men, wonderfully transforms them. Saul, by praising God in the communion of saints, became another man, but it may be questioned if he became a new man.
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.