Walking here signifies behavior in life. Alternate translation: "that you will live as God expects you to and so please him" (See: [[rc://en/ta/man/jit/figs-metaphor]])
Paul is speaking of the Colossian believers as if they were trees or plants that grow and bear fruit. Alternate translation: "by making sure that all of your good deeds please God and people and growing" (See: [[rc://en/ta/man/jit/figs-metaphor]])