Colossians 3:
22 Servants, obey in all things your masters according to the flesh; not with eyeservice, as menpleasers; but in singleness of heart, fearing God:
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.
25 But he that doeth wrong shall receive for the wrong which he hath done: and there is no respect of persons.
Col.3:22-25