I posted the following link on another thread but perhaps you missed it. Fr. Longenecker pinpoints the problem, most insightfully.
Beginning in the 60's, Christian preachers started to play down the sin thing. People were sick not sinful. They were wounded and needed healing. They were confused and needed guidance they were lost and needed to be found. They were OK, they just needed to find out that they were OK.
A few generations went by and people no longer understood what this thing called sin was at all. Furthermore we told them that they were wounded and lost and confused and sick, but they told us they didnt feel wounded or lost or sick or confused so we clearly had the problem they didnt.
Suddenly they didnt know that they needed a saviorsomeone who supernaturally forgave them of their sins because they didnt know that they were sinners because we didnt tell them what sin was.
The high standards of Catholic moral teaching are given as a criteria for diagnosis of the human condition. The preacher who points out sin is not a bad guyhes a good guylike the doctor who gives the bad news that what you thought was heartburn is actually cancer and you need surgery and quick. If he just pats you on the head and smiles and gives you an aspirin he may be a nice guy, but hes not a good doctor.
As the Pope has pointed out in todays interview just telling people they are sinners in an arbitrary way doesnt make sense. They dont know why what they are doing is wrong. Just saying that its wrong because the Bible says so doesnt work. They dont believe the Bible. Just saying its wrong because I am an authority figure and I say its wrong doesnt work because they do not accept my authority.
Essentially, moral relativism has taken over in western society. What was once considered sin has been twisted by this society, even to its legalization. Preaching is no longer effective when people respond that government has given them them their legal rights. Hence, they begin to doubt the existence of God. Think carefully about that ... look around you ... those folks cohabiting outside of marriage, contracepting, aborting their unwanted children ... all legal ... are "attached" to their sin and blinded by its legalization. To reach them, requires a more loving approach.
Sorry, but good luck with that.
A better approach would be presenting them with an undeniable proof of YHVH's existence and the outcome of inequity gone unchecked. Unfortunately most Christian religions are failing miserably in this fundamental area.
To reach them requires removing the mistranslations, inconsistences, and outright fabrications being presented as the Word of the Almighty today. People are much smarter today and better able to think for themselves.
What they really need, and are seeking, is the truth! Someone holding their hand and telling them they are really good little boys and girls and that everything will be alright, isn't going to work, and will only lead to more iniquity.
This was all was prophesied thousands of years ago and we're seeing those prophecies being fulfilled right before our eyes.