No doubt there are pearls of wisdom from strange sources:
And one of them, [named] Caiaphas, being the high priest that same year, said unto them, Ye know nothing at all, Nor consider that it is expedient for us, that one man should die for the people, and that the whole nation perish not. And this spake he not of himself: but being high priest that year, he prophesied that Jesus should die for that nation; And not for that nation only, but that also he should gather together in one the children of God that were scattered abroad. Then from that day forth they took counsel together for to put him to death. - John 11:49-53
Nevertheless, I will stick with the Fruits of the Spirit test (Matt 7, Gal 5) as it has been very effective for me.