We need to avoid unholiness...
1) Sexual immorality and impurity - 'impurity' refers to immoral thoughts, ideas, fantasies, and lusts. There are many types of immorality. A few are these: Fornication (sexual activity outside of marriage). Adultery (sexual activity with someone other than your spouse). Homosexuality (sexual activity with someone of the same sex). Lust (sexual activity with someone in your mind).
2) Coveteousness - a corruption of love in the life of a child of God’s, by taking their love that should be directed to their father alone, and places it instead on things that God our Father created.
3) Sinful speech - Foolish talk, crude joking.
These things should not be named among us. In other words, we are to avoid in every shape and form, anything that is likely to draw us toward any and all of these forms of unholy love.