“As he turned away to leave Samuel, God gave him another heart. All these signs came to pass that day. When they were going from there to Gibeah, a band of prophets met him. The spirit of God possessed him. He fell into a prophetic frenzy along with them. When all who knew him before saw how he prophesied with the prophets, the people said to one another. ‘What has come over the son of Kish? Is Saul also among the prophets?’ A man of the place answered. ‘Who is their father?’ Therefore it became a proverb. ‘Is Saul also among the prophets?’ When his prophetic frenzy had ended, he went home.”
Saul seems to be a changed man with a new heart. Everything happened the way that Samuel said it would. This, however, seems to be a different source since the name of the town has now switched from Gibeath-elohim to Gibeah, the town where Saul lived, which is not a Philistine town. Here other prophets met him. The Spirit of Yahweh came upon Saul and he joined the wandering singing prophets. Similar to the later questions about Jesus, they ask, is this not the son of Kish, what is he doing with the prophets? Thus the phrase about Saul being a prophet came to be known.
“Saul’s uncle said to him and to his servant boy. ‘Where did you go?’ He replied. ‘We went to seek the donkeys. When we saw they were not to be found, we went to Samuel.’ Saul’s uncle said. ‘Tell me what Samuel said to you.’ Saul said to his uncle. ‘He told us that the donkeys had been found.’ But about the matter of the kingship, of which Samuel had spoken, he did not tell him anything.”
Saul’s uncle wanted to know where they were. Saul said that they were looking for the donkeys and ran into Samuel. But he did not tell him about the anointing and how he was going to be king. This seems strange since you might think that Saul would be happy about this and would want to share it with his family.