Ephesians 4: 17, 18: “Walk no longer just as the Gentiles walk, in the futility of their mind, being darkened in their understanding, excluded from the life of God, because of the ignorance that is in them, because of the hardness of their heart.” We should not be like the Gentiles (unbelievers) who are darkened, ignorant, and hard. This leads to them practice sensuality, impurity, and greediness (v. 19). How do you avoid these things, as we are commanded? Get understanding (Proverbs 2: 2), knowledge (2 Peter 3: 18), and tenderheartedness (Ephesians 4: 32). Then we will avoid the sensuality, impurity, and greediness. Attacking these things without addressing their root is primarily futile.