The Flesh Profits Nothing.
The flesh(human body) profits nothing(John 6:63) Flesh & blood cannot inherit the kingdom of God(1st Corinthians 15:50). The flesh does not abide; all it eats, ingests, wears, puts on, takes up, gathers or amasses to itself ends in decay & decomposition/corruption. No matter how much you sow to the flesh, the harvest at the end of the day is corruption/decomposition - Galatians 6:8. The flesh being futile is naturally inclined to vanity. All it seeks, desires and craves for are vain things, ephemeral and transient. It does not desire nor care about spiritual things or anything eternal. With it's lusts, affections & works, it is opposed to and contrary to the things of the Spirit, lusting against the Spirit and warring against the soul. Galatians 5:17, 19-24; 1 Peter 2:11. You want to know just how hostile the flesh is? It does not give a damn about where your soul is going to hereafter. All it cares about is it's own pleasure & satisfaction in this life