1 Thessalonians 5:21
But test everything; hold fast to what is good.
John 7:24
Do not judge by appearances, but judge with right judgment."
Romans 12:2
Do not be conformed to this world but be transformed by the renewing of your mind, that you may prove what is the will of God, what is good and acceptable and perfect.
1 Corinthians 6:2-5
Do you not know that the saints will judge the world? And if the world is to be judged by you, are you not competent to try trivial cases?
Galatians 2:11-14
But when Cephas came to Antioch, I opposed him to his face, because he stood condemned.