Colossians 3:23–24
23 And whatsoever ye do, do it heartily, as to the Lord, and not unto men; 24 Knowing that of the Lord ye shall receive the reward of the inheritance: for ye serve the Lord Christ.
In the original: ἐργάζομαι ergazomai G2038 — Middle voice from G2041; to toil (as a task, occupation, etc.), (by implication) effect, be engaged in or with, etc.: - commit, do, labor for, minister about, trade (by), work.
See also: Colossians 3:17 · Ephesians 6:6 · Romans 14:8 · 2 Chronicles 31:21