Wisdom will save you from the ways of wicked men, from men whose words are perverse, who leave the straight paths to walk in dark ways, who delight in doing wrong and rejoice in the perverseness of evil, whose paths are crooked and who are devious in their ways (Proverbs 2:12-15).

Sometimes, people of faith can act as through personal happiness or inner peace are some kind of gauge to a person's level of righteousness or wickedness.  You know:  "I have such a peace and joy now, thanks to my faith in Jesus Christ -- something I never had back in my days of enslavement to sex, drugs, and rock 'n roll."  The implication is that faith = happiness, and that worldliness = misery.

The trouble is that these moral mathematics aren't accurate at all!  They're actually quite independent variables.  The Bible itself says that it's fairly common for a righteous person to experience pain and suffering (see John 16:33 or the entire book of Job) -- and that wicked people delight and rejoice in their wickedness, a lot of the time.  It may eventually catch up with them, of course, but while it's happening the sin and wicked stuff can actually be a lot of fun.  Thus, a person's level of enjoyment in life really is not an accurate gauge of righteousness or wickedness in the slightest.  Much of the time, a person's level of enjoyment can be genuinely misleading.

Wisdom is the true gauge in distinguishing good from evil.  Divine wisdom -- as expressed in Jesus -- is what's useful in separating light from darkness.  Like it says in John 3:19-21, "This is the verdict:  Light has come into the world, but men loved darkness instead of light because their deeds were evil.  Everyone who does evil hates the light, and will not come into the light for fear that his deeds will be exposed.  But whoever lives by the truth comes into the light, so that it may be seen plainly that what he has done has been done through God."