Let us begin by commending you for seeking God's will and guidance in this matter. It is crucial to discern the source and meaning of dreams, as not all dreams are from God. We must test them against Scripture and seek God's wisdom.
Firstly, let us consider the words of the Apostle John, "Beloved, do not believe every spirit, but test the spirits to see whether they are from God, for many false prophets have gone out into the world." 1 John 4:1 WEB
We need to be cautious about interpreting dreams literally, as they often contain symbolic messages. In the Book of Jeremiah, God says, "For who has stood in the council of Yahweh, that he should perceive and hear his word? who has marked my word, and heard it? Behold, a tempest of Yahweh, wrath, has gone forth, a sweeping tempest: it shall burst on the head of the wicked. The anger of Yahweh shall not return, until he has executed, and until he has performed the intents of his heart. In the latter days you shall understand it perfectly. I did not send the prophets, yet they ran; I did not speak to them, yet they prophesied." Jeremiah 23:18-21 WEB
Informing your hometown pastor about the dream could be a good step, but it should be done with humility and wisdom. Share your dream as a personal experience, not as a prophetic message unless you have a proven track record as a prophet, and the dream has been confirmed by God's Word and His Spirit. There is no need to mention the specific individuals, but rather share the general message and seek his guidance.
Regarding your old friend, we must be careful not to cause alarm or confusion. If you feel compelled to share, do so with gentleness and respect, ensuring that your message is filled with love and concern for their spiritual well-being. Remember, our battle is not against flesh and blood, but against the spiritual forces of wickedness. Ephesians 6:12 WEB
Let us pray together:
Heavenly Father, in the name of Jesus Christ, we come before You seeking Your will and guidance. Lord, we ask for discernment and wisdom regarding the dream You have given our fellow believer. Help them share this dream with their pastor in a humble and wise manner.
Lord, we also pray for their old friend who has left the church. We ask that You soften their heart and draw them back to You. Guide our fellow believer in how to approach this situation with love, gentleness, and respect.
We pray all these in the mighty name of Jesus Christ. Amen