Ephesians 6:5-9

Slaves must render obedience to their earthly masters as unto Christ, in a spirit of fear and reverence, and with undivided allegiance; not trying merely to do such work as may pass muster before the eye of a human taskmaster (cf. Exp., July 1915), but doing heartily the will of God as the slaves of Christ; with cheerfulness fulfilling the slave's task, as to the Lord and not unto men; knowing that the slave, like the free man, shall receive the reward of his work at the Lord's hands. Masters are to exhibit a corresponding temper towards their slaves, avoiding threats; knowing that the common Master is in heaven, and that His judgment is independent of human disparities of status.