1 Thessalonians 5:21
Prove all things; hold fast that which is good.
John 7:24
Judge not according to appearance, but judge righteous judgment.
Romans 12:2
And be not conformed to this world, but be ye transformed by the renewing of your mind, that ye may prove what is that good, and acceptable, and perfect will of God.
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 judge the smallest matters?
Galatians 2:11-14
But when Peter came to Antioch, I withstood him to the face, because he was to be condemned.