Bible Verses about “mediocre”

“Don't be conformed to this world, but be transformed by the renewing of your mind, so that you may prove what is the good, well-pleasing, and perfect will of God.”

“So, because you are lukewarm, and neither hot nor cold, I will vomit you out of my mouth.”

“"I know your works, that you are neither cold nor hot. I wish you were cold or hot.”