In the parable of the wedding banquet (Matthew 22) Jesus describes a king who invites guests (presumably the well-healed and well-known) to the wedding feast of his son. The guests politely refuse, saying they are busy. In some cases, the king's messengers are beaten up or even killed. The king then invites all those who are dispossessed - the poor, the homeless, the outcasts, to come instead. They duly do, filling up the great hall, but one is not properly dressed. He is bound up and thrown out.
It seems a little harsh until you realise that the penalty has nothing to do with his or her actual dress, but with another kind of dress spoken of in scripture. This is the outfit of love, compassion and kindness that is the hallmark of those who love God. The Lord has set a high bar for human conduct and we all fall short. It is easy in such as world as this to fall into bad habits or adopt selfish postures.
But this should never stop us trying. Again and again.