Things Jw DO tell you;
1) To worship Jehovah and never look at the imperfections of your brothers.
As Jesus said "you will know my disciples by the love umong themselfs" john 13v 35 ( if i recall right,bible not at hand) I look at individuals,if 1 person has love for their brother and is genuinely concerned for that person and cares for them,then they are a disiciple.Jehovah talks of the wheat and weeds within the congregations so yes sadly there will be weeds and many many weeds as we reach nearer to the end.Im never letting go of Jahs hand. I'm clinging on with both hands