"A lot of first person, personal assurances there. My kindness is blunt. Murray's chapel teachings are cultic. He claimed to be a prophet and made predictions which did not come to be. He is in the same batch of false predictors as the Millerites, Mormons and Harold Camping."
"Well, I thought it was going to be 2003, so we're not perfect are we?"
That's right, mankind isn't perfect, but God Almighty is, and Scripture says that if a prophet speaks in the name of the Lord and the prophecy doesn't come to pass, you will know that he isn't from the Lord.
So you see, Scripture is hardly as flippant about false prophets as you seem to be.
Arnold denied being a prophet. He was just wrong, as we all are on occasion.