Just before writing some of the most Old Testament-like warnings in the New Testament, in his second letter the Apostle Peter wrote about the nature of prophecy.
He specifically draws a contrast between • something that's made up (“cleverly told fables” 1:16; “a product of human initiative” 1:21) and • something that has the backing of the Holy Spirit (1:21).
He clearly comes down on the side of the supernatural origin in writing, “no prophecy found in Scripture is a matter of the prophet's own interpretation … but it comes when men are moved to speak on behalf of God by the Holy Spirit” (1:21-22).
In other words, the meaning is not up to the man giving it because he is not the origin of it.
Limited man would not come up with God-sized ideas or actions, but he can communicate them.