1TH 2:10
Ye are witnesses, and God also, how holily and justly and unblamably we behaved ourselves among you that believe.
1 Thess. 2:10
Good behavior is so important! There are few things that will do more to spoil your testimony to those around than bad behavior. People watch you - your way of life, your speech, your actions and reactions, and they judge your Christianity by what they see and hear. Be careful to maintain good behavior.