New American Standard Bible (©1995)
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;
King James Bible
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;
Darby Bible Translation
Bondmen, obey masters according to flesh, with fear and trembling, in simplicity of your heart as to the Christ;
English Revised Version
Servants, be obedient unto them that according to the flesh are your masters, with fear and trembling, in singleness of your heart, as unto Christ;
Online Parallel Bible