This devotional comes from “Solid Joys,” the Android and iOS app from Desiring God that features daily devotions by John Piper.
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I see in my members another law waging war against the law of my mind and making me captive to the law of sin that dwells in my members. (Romans 7:23)
All true believers have sin remaining in them in this life. Therefore, we are commanded to constantly kill this sin (Romans 8:13; Colossians 3:5). How is this to be done? Here are 11 practical steps for killing sin:
1) Take heart from the truth that the old sinful you is decisively already dead (Romans 6:6; Colossians 3:3; Galatians 5:24). This means three things: a) the mortal blow to our “old man” has been struck, b) he will not succeed in domination now, and c) his final obliteration is certain.
2) Consciously reckon the old man dead — that is, believe the truth of Scripture about the old man’s death, and seek to live in that freedom (Romans 6:11).
3) Cultivate enmity with sin. You don’t kill friends (Romans 8:13). Ponder how it killed your best friend, dishonors your Father, and aims to destroy you forever.
4) Rebel against sin’s coup. Refuse to be bullied by his deceits and manipulations (Romans 6:12). Fight your sinful impulses with all your might like a boxer fights an opponent and like a marathon runner fights fatigue (1 Corinthians 9:27; 2 Timothy 4:8).
5) Declare radical allegiance to the other side — to God! — and consciously put all your mind and heart and body at his disposal for righteousness and purity (Romans 6:13).
6) Don’t make any plans that open the door for sin’s entry (Romans 13:14). Don’t prove your purity in a pornography shop.
7) Develop mental habits that continually renew the mind in God-centeredness (Romans 12:2; 2 Corinthians 4:16). Fix attention daily on “the things of the Spirit” (Romans 8:5), “things that are above” (Colossians 3:2), “whatever is true, honorable, just, pure, lovely, gracious, excellent, praiseworthy” (Philippians 4:8).
8) Admit failure and confess all known sin every day (1 John 1:9). Ask for forgiveness (Matthew 6:12).
9) Ask for the Spirit’s help and power in all these things (Romans 8:13; Galatians 5:17, 22; Ezekiel 36:27; Isaiah 26:12).
10) Be part of a larger and smaller fellowship where you are exhorted often to beware of the deceitfulness of sin (Hebrews 3:13).
11) Beware of legalistic obedience, but let all your warfare be “the work of faith” (2 Thessalonians 1:11). That is, let your fight against sin spring from your confidence in the superior pleasures of closeness to Christ.