Originally Posted by Starman
I can understand your concern since the message, if indeed it was a message and not the brain producing an auditory hallucination due to severe stress, fatigue, or semi sleep state called REM, or reacting to some type of hallucinogenic substance such as strong Chinese tea, seems purposefully cryptic.
Of course God did communicate with his servants in ancient times via dreams, such as the dreams he sent to Joseph in Egypt, and by voice transmission, such as when he communicated with Moses vvia and angel from the burning bush, or via visions, such as the one that Ezekiel and later the apostle John received. All these communications were inspired to be written down for our instruction. Sometimes, the writers themselves did not know the meaning to. Others easily understood day. Still others were prophetic and provide us with a demonstration of God's ability to foresee what we humans are incapable of and to bring about that which he plans to accomplish.
Now, how would I react if I suddenly heard the same words? Since there is a spirit rebel out there who likes to mimick God, I would be very careful. I would first examine the message to see if it harmonizes with God's character, his love his wisdom and his justice. If it does, then I would pray for God to identify himself as the source. If no clear identification is forthcoming as was the case with the prophets who definitely knew who was communicating with them, and other inspired persons, then I would conclude that the phenomenon has another explanation.
BTW
You are also quite welcomed to accept the other posters' responses in preference to mine.