'Impurity' in the Bible

Therefore God gave them over in the lusts of their own hearts to [sexual] impurity, so that their bodies would be dishonored among them [abandoning them to the degrading power of sin],

I am speaking in [familiar] human terms because of your natural limitations [your spiritual immaturity]. For just as you presented your bodily members as slaves to impurity and to [moral] lawlessness, leading to further lawlessness, so now offer your members [your abilities, your talents] as slaves to righteousness, leading to sanctification [that is, being set apart for God’s purpose].