New Defender's Study Bible Notes
5:19 these. The apostle here lists seventeen typical sins of the “flesh.” The list is typical, not exhaustive, as he adds the phrase “and such like” to cover the rest. These include sexual sins, religious sins, moral sins, violent sins, mental sins—everything which violates the laws of God and man. It seems anomalous that teaching that salvation depends on obedience to the works of the law would actually lead to law-breaking, but it often does just that. Our sinful human nature somehow makes that which is prohibited more desirable.
5:20 variance. “Variance” means “intense dissensions;” “emulations” means “bitter jealousies;” “seditions” means “factious divisions.”
5:21 do such things. Those who “do” such things—that is, “habitually do” such things—thereby indicate they are not really led by the Spirit, and therefore not really saved.