How can we know when a message has not been spoken by the LORD? -Deuteronomy 18:21b
The writer then goes on to answer the question:
If what a prophet proclaims in the name of the LORD does not take place or come true, that is a message the LORD has not spoken. -Deuteronomy 18:22a
I agreed with James that this statement could be considered universally applicable, not just to be applied to the situation being discussed in Deuteronomy 18.
Given that, the test for a false teaching can be reduced to the following:
A teaching is false IF:
1) The teacher was a prophet. AND
2) The prophet must have made predictions that did not come true.
In recent posts, I've blogged about Jesus' (Seemingly failed) prediction of his own imminent return, as well as the possibility that Jesus may not have known when he would return. In one post, I discuss a quote by C.S. Lewis where Lewis suggests that Jesus was wrong about his own return.
The test above raises the stakes in this conversation, because if Jesus was wrong (as Lewis suggests), and if he can be considered a prophet (which is undoubtable) then the test above would suggest that Jesus is a false prophet. It seems that C.S Lewis has come dangerously close to declaring Jesus a false prophet.
Lewis called the verse containing what he called Jesus' "exhibition of error" the "most embarrassing verse in the Bible". As I've said before, it seems more appropriate to be embarrassed about what C.S. Lewis said, than about what Jesus said.