It is imperative to know the voice of the Lord for yourself and to go through deliverance to make sure the voice you’re attributing to the Lord is actually His and not the voice of a stranger.

Confirmation is a real thing. Out of the mouth of two or three witnesses, let every word be established (Deut. 17:6, 19:15; Matt. 18:16; 1 Tim. 5:19).

But false confirmation is a very real thing too. Remember, God allowed a lying spirit to be in the mouth of the prophets (1 Kings 22:19-23, 2 Chron. 18:18-22).