Observe it, closely, ensure it’s God. Test it by the word in the bible. Ask God to reveal the truth.
1 John 4:1-2
“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. 2 By this you know the Spirit of God: every spirit that confesses that Jesus Christ has come in the flesh is from God,”