It should not be understood as teaching that even a single immoral thought, word or deed is enough to disqualify us from heaven; otherwise, which of us would ever qualify for admission? No; for those who fall into such sins through weakness, but afterwards repent in shame and humility, there is forgiveness. The immoral or impure person envisaged here is one who has given himself up without shame or penitence to this way of life, one who is covetous in the sense already defined, namely sexually greedy (4:19; 5:3), that is, Paul adds in parenthesis, an idolater. Such people, whose lust has become an idolatrous obsession, will have no share in the perfect kingdom of God.
