We need to see how we have "evolved". I use this word loosely ... actually it's a split second that this happens to us ... evolving into Christianity from where Adam was and lost it for us, and where we were before we got back in line with God. This is where the worldly bunch is now ... between Adam's loss and getting born again.
Everybody, born again or not, has fruit ... everybody, born again or not, has character. The worldly character is not rooted in God's character ... it's rooted in a person's human spirit and what he can generate from his own will.
God gave us all a free will ... He gave us intelligence ... and we use these. But the devil uses these things also, and he deceives people with them.
You can look at someone and say, "He has a lot of charisma and he's doing a lot of right things, good things". He may be the farthest from being a Christian as a person can be, but all of these "good things" are manifesting through him. This is deception because it's not rooted and grounded from God's Spirit, the Holy Spirit, and the born-again spirit.
Our flesh, too, had been trained completely before we became born again and we did some of the things mentioned in Galatians 5:19-21 ... adultery, sexual immorality, uncleanness, licentiousness, idolatry, sorcery (witchcraft), hatred. contentions (arguments), outbursts of wrath, selfish ambitions, dissensions, heresies, envy, murders, drunkenness, revelries (partying), and the like.
Reverend Robert W. & Mary C. Butler