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Where does the Bible say “be transformed by the renewing of your mind”?

It is in Romans 12:2 · King James Version

“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.”
Read the chapter Romans 12 →

See also

Romans 12:1

I beseech you therefore, brethren, by the mercies of God, that ye present your bodies a living sacrifice, holy, acceptable unto God, which is your reasonable service.

2 Corinthians 5:17

Therefore if any man be in Christ, he is a new creature: old things are passed away; behold, all things are become new.