Umar ibn al-Khattaab (may Allaah be pleased with him):”If you see that one of you has slipped, correct him, pray for him and do not help Shaytan against him (by insulting him, etc.).”[Tafseer al-Qurtubi, 15/256]
Cause everyone is going to slip, & have there ups and down in their Imaan. But at least they are trying to get back up on their feet and return back to the Deen. Its our job to help each other stay on the right path however, now a days if someone ends up slipping we begin to judge them and forget about them. It should not be like that, instead we should make Dua for one another and help them from not falling too far from the deen, we need to help each other strive for Jannah.!