God knows everything about you and will pass eternal judgement upon you. Your friends only know what you allow them to know; though they may pass judgement you may be embarrassed, but will live for another day. Which judgement is really more important to you, in your life?
People have the strangest tendency to attribute to God their own belief without regard to what is written in the bible. Be careful that you take ALL of God’s word into account when telling others what God said!
People cannot stand being called out and proven wrong. Although, it is much easier to handle if done in the light of love, friendship, & camaraderie.