It is abundantly clear that the believer is now counted dead with Christ and subsequently risen with Him. If these things are true, then we ought not to live after the rudiments of the world, but rather after Christ who is our Head.

In the concluding lesson of chapter two, we remind ourselves of the purpose of the book: to gain knowledge of God's will in all wisdom and spiritual understanding so that we may walk worthy and bear fruit.

Do not think yourself to be under the law (that is only a shadow of things to come), but rather as a member of Christ's body (which is the current operation of God).

Up until this point in the book of Colossians, Paul has taken (and will continue to take) every opportunity to exalt Christ. Christ is the fulness of the Godhead bodily... we are complete in Him.

Revisiting how you were saved will produce the answer, which in case you are worried about it, is no.