RobH_en_tn/col/03/10.md

you have taken off the old man with its practices, and you have put on the new man

Here Paul is speaking of a Christian's rejecting his old sinful life as if it were an old garment that he takes off in order to put on a new garment. It was very common for Israelites such as Paul to speak of moral qualities as if they were pieces of clothing. (See: rc://en/ta/man/translate/figs-metaphor)

the image

This refers to Jesus Christ. (See: rc://en/ta/man/translate/figs-metonymy)