5 And that means killing off everything connected with that way of death: sexual promiscuity, impurity, lust, doing whatever you feel like whenever you feel like it, and grabbing whatever attracts your fancy. That's a life shaped by things and feelings instead of by God. 6 It's because of this kind of thing that God is about to explode in anger. 7 It wasn't long ago that you were doing all that stuff and not knowing any better.
8 But you know better now, so make sure it's all gone for good: bad temper, irritability, meanness, profanity, dirty talk. 9 Don't lie to one another. You're done with that old life. It's like a filthy set of ill-fitting clothes you've stripped off and put in the fire.
Matthew Henry's Commentary on Colossians 3:5-9
Commentary on Colossians 3:5-11
(Read Colossians 3:5-11)
It is our duty to mortify our members which incline to the things of the world. Mortify them, kill them, suppress them, as weeds or vermin which spread and destroy all about them. Continual opposition must be made to all corrupt workings, and no provision made for carnal indulgences. Occasions of sin must be avoided: the lusts of the flesh, and the love of the world; and covetousness, which is idolatry; love of present good, and of outward enjoyments. It is necessary to mortify sins, because if we do not kill them, they will kill us. The gospel changes the higher as well as the lower powers of the soul, and supports the rule of right reason and conscience, over appetite and passion. There is now no difference from country, or conditions and circumstances of life. It is the duty of every one to be holy, because Christ is a Christian's All, his only Lord and Saviour, and all his hope and happiness.