Clothing is a common New Testament metaphor for spiritual change. Paul wrote in Romans, "Clothe yourselves with the Lord Jesus Christ, and do not think about how to gratify the desires of the sinful nature" (Rom 13:14).

And in First Corinthians, "The perishable must clothe itself with the imperishable, and the mortal with immortality. (1 Corinthians 15:53).

In Colossians, we read, "Therefore, as God's chosen people, holy and dearly loved, clothe yourselves with compassion, kindness, humility, gentleness and patience (Colossians 3:12).

Finally, in First Peter we are admonished, "All of you, clothe yourselves with humility toward one another, because, 'God opposes the proud but gives grace to the humble'" (1 Peter 5:5).

Being clothed anew is a consistent New Testament expression for holiness and righteousness. The old clothes have to come off and new ones put on.

This text confronts us with the paradox of God's free invitation to the banquet with no strings attached and God's requirement of "putting on" something appropriate to that calling. The theological point is that we are warned of the dire consequences of accepting the invitation and doing nothing except showing up.