”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.” Romans 12:2
Romans 12:1-2 tells us that the way we are “transformed i.e. the way we learn to live Christ’s Life, is by the renewing of our minds” – putting off our own negative/corrupt thinking and putting on God’s Thoughts; While Ephesians 4:22-24 exhorts us to “… put off concerning the former conversation (behavior) the old man (old self), which is corrupt according to the deceitful lusts; and be renewed in the spirit of your mind ; and that ye put on the new man (the new self), which after God is created in righteousness and true holiness.”
A “renewed mind,” then, is one that has done two things: It has “put off” any sin (any hurt, doubt, fear, rebellion, self-centeredness, lust, bitterness, etc.), any corrupt thinking, or any barrier that would quench God’s Spirit and has “put on” the Mind of Christ (2 Corinthians 5:17; 10:52).
Renewing our minds is not simply “changing” our thoughts, but actually putting off the old, negative thoughts as well as putting on God’s Thoughts. Note that: If we’re not willing to yield, set aside and relinquish our own thoughts, however, then our thinking process will never be renewed and our lives will never be transformed. In other words, we can’t just say to God, “Lord, give me Your Thoughts,” and somehow expect Him to “automatically” give us His Mind. We must first put off our own self-centered thinking by confessing, repenting, and then giving it all to God. At this point, we can then be sure to have put on the Mind of Christ for real.