American Standard Version (ASV):
And they that have believing masters, let them not despise them, because they are brethren; but let them serve them the rather, because they that partake of the benefit are believing and beloved. These things teach and exhort.
King James Version (KJV):
And they that have believing masters, let them not despise [them], because they are brethren; but rather do [them] service, because they are faithful and beloved, partakers of the benefit. These things teach and exhort.