en_tn_condensed/mrk/10/21.md

One thing you lack

"There is one thing you are missing." Here "lack" is a metaphor for needing to do something. AT: "One thing you need to do" or "There is one thing you have not yet done" or (See: rc://en/ta/man/translate/figs-metaphor)

give it to the poor

Here the word "it" refers to the things he sells and is a metonym for the money he receives when he sells them. AT: "give the money to the poor" (See: rc://en/ta/man/translate/figs-metonymy)

the poor

This refers to poor people. AT: "poor people" (See: rc://en/ta/man/translate/figs-nominaladj)

treasure

wealth, valuable things