The Christian life is one of conflict, a conflict between the way or walk of the Spirit and the way or walk of the flesh.
There is a civil war within ourselves. As Luther says 'Christians are not stocks and stones.'
As we walk in the Spirit, flesh becomes increasingly subdued, but the conflict remains and it is fierce and unremitting.
Paul lists four broad realms of the life where the sinful nature impacts us - sex, religion, society and drunkenness.
Galatians 5:16-21 I say, then, walk by the Spirit and you will certainly not carry out the desire of the flesh. 17 For the flesh desires what is against the Spirit, and the Spirit desires what is against the flesh; these are opposed to each other, so that you don’t do what you want. 18 But if you are led by the Spirit, you are not under the law. 19 Now the works of the flesh are obvious: sexual immorality, moral impurity, promiscuity, 20 idolatry, sorcery, hatreds, strife, jealousy, outbursts of anger, selfish ambitions, dissensions, factions, 21 envy, drunkenness, carousing, and anything similar.