John Gill Commentary Colossians 3:9

"lie not one to another; seeing that ye have put off the old man with his doings," — Colossians 3:9 (ASV)

Lie not one to another
&c.] Which is another vice of the tongue, and to which mankind are very prone, and ought not to be done to any, and particularly to one another; since the saints are members one of another, and of the same body, which makes the sin the more unnatural; of this vice, (See Gill on Ephesians 4:25), and is another sin that is to be put off, or put away; that is to be abstained from, and not used. The arguments dissuading from this, and the rest, follow,

seeing that you have put off the old man, with his deeds .
The Syriac, Arabic, and Ethiopic versions read this as an exhortation, as they do the next verse also. Who is meant by the old man, (See Gill on Romans 6:6), and what by putting him off, (See Gill on Ephesians 4:22), and as for "his deeds", they are the same with the deceitful lusts there mentioned, and the works of the flesh in (Galatians 5:19) and with the members of the body of sin in the context, (Colossians 3:5Colossians 3:8) . Some, as Beza, think, that here is an allusion to the rite of baptism in the primitive church; which, as he truly observes, was performed not by aspersion, but immersion; and which required a putting off, and a putting on of clothes, and when the baptized persons professed to renounce the sins of the flesh, and their former conversation, and to live a new life.