Paul advises them to put off behaviors that are sinful and put on ones that are righteous. It’s like taking off dirty clothes and putting on clean ones. They should want to be rid of these harmful things. As Paul did in Ephesians, he reminds them that harmony in relationships should also be true of them.
Putting off sin is harder than it sounds. Sin looks pretty good sometimes. Making this a reality in our lives requires us to look to Jesus.