Does any but God possess the right of condemnation? Who are we to judge others? Condemnation of the sin of unbelievers by believers is not evangelism, it’s damaging, hateful, and drives people away.
A man who is truly of integrity is hard to come by; it’s harder still to live one’s life under such a strict code of ethics, and part of that difficulty comes from the challenge of defining without a shadow of a doubt what’s morally right.
God knows you’re going to get tired; He knows that this world will wear on you, so being the loving Father that He is, He’s written to us, He’s given us instructions on how to deal with that.