Charles Ellicott Commentary Colossians 3:10

"and have put on the new man, that is being renewed unto knowledge after the image of him that created him:" — Colossians 3:10 (ASV)

The new man, which is (being) renewed.—There are here the same two different words which are found in the parallel passage. (See Notes on Ephesians 4:22-24). “The new man” is here properly the youthful man “which is renewed,” that is, to which is given a nature really fresh and new.

On verses 10-17:

In these verses we have the corresponding positive exhortation, connected with the idea of resurrection with Christ, through which we put on the new man, holding Christ to be our all in all. Of the new nature there are two marks—towards man love in all its various forms, towards God thanksgiving and living to His glory.