Thus they have a warped sense of sin and of their own spiritual well-being. Mainly, from older Christians who mean well but who do not understand what they ought to do. Believers must be as different from the world as black is from white. Today few youngsters listen to adults - but for Christians, this is disastrous and evil. This was God's judgement.
Teenagers are fully responsible for their sins and actions.
They are accountable to God and mature Christians should not treat them as special cases. Never over-simplify scripture for teenagers. It is up to them to listen carefully, to note and to practise what the Bible says. Certainly provide alternative meanings for those who do not understand certain words or ideas. There is nothing wrong with having an occasional, youth-orientated meeting.