1Samuel 10:6, 10 And the Spirit of the Lord will come upon thee, and thou shalt prophesy with them, and shall be turned into another man….And when they came thither to the hill, behold, a company of prophets met him; and the Spirit came upon him, and he prophesied among them.
After Samuel anointed Saul to be king, he predicted what would soon happen to Saul: he said the Spirit of the Lord would come upon him and he would prophesy. And so it happened: a company of prophets met him and he prophesied among them play. A prophet is someone who speaks God’s words. They would instruct and inspire people to live in faithfulness to God. When his friends heard inspired words they said, “is Saul among the prophets?”
The Holy Spirit did not come upon all people everywhere until Pentecost, but He did come upon judges, kings, and prophets temporarily in the OT. The Spirit came upon Saul at his anointing and gave him power to prophesy. The Spirit was in evidence through his prophesying. Unfortunately, power and pride overtook Saul and later God sent an evil spirit to him. Later Saul was much different than early Saul.
In our own lives also the Holy Spirit will give believers the right words at the right time to give comfort, wisdom, encouragement and edification to other people. And sometimes we even prophesy inspiring words to ourselves. We pay particular attention to words that come from God through human instruments. On the Day of Pentecost Peter declared, Acts 2:17: “And your sons and your daughters shall prophesy.”