abstain from every form of evil.
22 From every evil appearance. Some think that this is a universal statement, as though he commanded to abstain from all things that bear upon their front an appearance of evil. In that case the meaning would be, that it is not enough to have an internal testimony of conscience, unless regard be at the same time had to brethren, so as to provide against...
This advice genuinely follows upon the former; after we have tried all things, we must hold fast that which is good, and abstain from evil. Where note, the gradation used by our apostle, we must abstain from evil, from all evil, from all appearance of evil.
TITTMANN supports English Version, "from every evil appearance" or "semblance." The context, however, does not refer to evil appearances IN OURSELVES which we ought to abstain from, but to holding ourselves aloof from every evil appearance IN OTHERS; as for instance, in the pretenders to spirit-inspired prophesyings. In many cases the Christian should not abstain from what has the semblance ("appearance") of evil, though really good.