Sin is much more than wrong actions, unkind words, or even those evil thoughts we never express. Sin is a principle or moral force in our hearts, our inner being. Our sinful actions, words, and thoughts are simply expressions of the principle of sin residing within us, even in those of us whose hearts have been renewed. The apostle Paul calls this principle the flesh or sinful nature in some Bible translations.
8 But sin, finding opportunity in the commandment [to express itself], got a hold on me and aroused and stimulated all kinds of forbidden desires (lust, covetousness). For without the Law sin is dead [the sense of it is inactive and a lifeless thing].
9 Once I was alive, but quite apart from and unconscious of the Law. But when the commandment came, sin lived again and I died (was sentenced by the Law to death).
10 And the very legal ordinance which was designed and intended to bring life actually proved [to mean to me] death.
11 For sin, seizing the opportunity and getting a hold on me [by taking its incentive] from the commandment, beguiled and entrapped and cheated me, and using it [as a weapon], killed me.
Romans 7:8–11
17 For the desires of the flesh are opposed to the [Holy] Spirit, and the [desires of the] Spirit are opposed to the flesh (godless human nature); for these are antagonistic to each other [continually withstanding and in conflict with each other], so that you are not free but are prevented from doing what you desire to do.
Galatians 5:17
8 But sin, finding opportunity in the commandment [to express itself], got a hold on me and aroused and stimulated all kinds of forbidden desires (lust, covetousness). For without the Law sin is dead [the sense of it is inactive and a lifeless thing].
9 Once I was alive, but quite apart from and unconscious of the Law. But when the commandment came, sin lived again and I died (was sentenced by the Law to death).
10 And the very legal ordinance which was designed and intended to bring life actually proved [to mean to me] death.
11 For sin, seizing the opportunity and getting a hold on me [by taking its incentive] from the commandment, beguiled and entrapped and cheated me, and using it [as a weapon], killed me.
Romans 7:8–11
17 For the desires of the flesh are opposed to the [Holy] Spirit, and the [desires of the] Spirit are opposed to the flesh (godless human nature); for these are antagonistic to each other [continually withstanding and in conflict with each other], so that you are not free but are prevented from doing what you desire to do.
Galatians 5:17