Ephesians 6:5-6; Ephesians 6:8

5 Servants, be obedient to them that are your masters according to the flesh, with fear and trembling, in singleness of your heart, as unto Christ; 6 Not with eyeservice, as menpleasers; but as the servants of Christ, doing the will of God from the heart;
8 Knowing that whatsoever good thing any man doeth , the same shall he receive of the Lord, whether he be bond or free.