When a person becomes a Christian, that personís behaviour must change. He must not continue to do the same wrong things that he was doing formerly. Paul compares this in Ephesians 4:22-24 to a person who changes his clothes. He takes off and he puts away his old clothes. He then puts on his new clothes. That is a word-picture of how completely God changes a personís life (2 Corinthians 5:17). He takes away everything that was wrong and evil in the personís life; he gives that person a new kind of life, so that the person can serve him properly.
However, Paulís word-picture about the clothes does not fully express Paulís thoughts about this matter. When we change our clothes, we only change our outer appearance. In other words, what other people see about us changes; but there is no change to our inner thoughts and attitudes. Of course as Christians we should change our actions, to do what is right and good and holy. However, it is not good enough for that change only to affect what other people see about us. We must not behave well in public, but continue to think evil thoughts. The change that God is making in our lives needs to affect every part of us, including our thoughts and attitudes.
So, God wants to change even the way that we think. The spirit of a person means the inner person, so perhaps Ďthe spirit of the mindí means even a personís most secret and private inner thoughts. Of course those thoughts must change. Our evil thoughts are the cause of our evil actions (Mark 7:20-23). The person whose thoughts are true, noble and right, does true, noble and right things (Philippians 4:8).
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© 2018, Keith Simons.