When God appears to people in visions, it is usually to:
- turn people from their wayward and sinful ways
- reassure and comfort them
- give them instructions
The apostle Paul’s life is a good example. Jesus appeared to Paul (previously known as Saul) and showed Himself to the true Saviour, so that he would repent. God also appeared to Paul another time and gave him the reassurance to stay on in Corinth where he faced opposition while he preached the good news of Jesus. God also instructed Paul not to be silent.
Acts 9:3-5 ESV Now as he went on his way, he approached Damascus, and suddenly a light from heaven shone around him. And falling to the ground, he heard a voice saying to him, “Saul, Saul, why are you persecuting me?” And he said, “Who are you, Lord?” And he said, “I am Jesus, whom you are persecuting.
Acts 18:9-11 ESV And the Lord said to Paul one night in a vision, “Do not be afraid, but go on speaking and do not be silent, for I am with you, and no one will attack you to harm you, for I have many in this city who are my people.” And he stayed a year and six months, teaching the word of God among them.