Matthew 18:16
but if he will not listen, take one or two others along with you, so that every case may be decided on the evidence of two or of three witnesses.
1 Corinthians 6:4-5
And yet, when you have mundane issues to settle, you refer them to the judgment of men who from the point of view of the church are of no account!
1 Thessalonians 2:10
You are witnesses, and so is God, to our behaviour among you believers, how pious and upright and blameless it was,
Hebrews 13:18
Pray for me, for I am sure I have a clean conscience; my desire is in every way to lead an honest life.
1 Peter 2:12
Conduct yourselves properly before pagans; so that for all their slander of you as bad characters, they may come to glorify God when you are put upon your trial, by what they see of your good deeds.
1 Peter 3:16
see that you have a clean conscience, so that, for all their slander of you, these libellers of your good Christian behaviour may be ashamed.