Because Jesus was God who came to serve, and Jesus counted us to be more important than himself, Paul the apostle honored slaves in what he wrote in Ephesians.
5 Slaves, be obedient to those who are your masters according to the flesh, with fear and trembling, in the sincerity of your heart, as to Christ;
6 not by way of eyeservice, as men-pleasers, but as slaves of Christ, doing the will of God from the heart.
7 With good will render service, as to the Lord, and not to men,
8 knowing that whatever good thing each one does, this he will receive back from the Lord, whether slave or free.
9 And, masters, do the same things to them, and give up threatening, knowing that both their Master and yours is in heaven, and there is no partiality with Him—(Eph 6:5-9).
With four verses he addressed the slaves and told them to serve their masters as they would Christ. But the striking thing is one verse is addressed to the masters: they are told to treat the slaves the same way Paul told the slaves to treat them! Further, the masters needed to remember that they had a Master in heaven who was observing how they treated the slaves. Christ who became the slave of us all for our good was now changing the way the world operated.