1 Thessalonians 5:21
Prove all things; hold fast that which is good.
John 7:24
Judge not by appearance, but judge righteous judgment.
Romans 12:2
And be not conformed to this world, but be transformed by the renovation of your mind, that you may prove by experience what is the will of God, that is good, acceptable, and perfect.
1 Corinthians 6:2-5
Know ye not that the saints shall judge the world? and if the world shall be judged by you, are ye unworthy to be judges in the smallest matters?
Galatians 2:11-14
But when Peter came to Antioch I withstood him to his face, because he was blameable.