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;
Servants - literally, 'slaves.'
Masters according to the flesh - in contrast to your heavenly Master (Ephesians 6:4). A consolatory hint that the mastership to which they were subject was but for a time (Chrysostom): their real liberty was still their own (1 Corinthians 7:22).
Fear and trembling - not slavish terror, but (1 Corinthians 2:3, note; 2 Corinthians 7:15; Philippians 2:12) anxious solicitude to do your duty, and fear of displeasing, as great as is produced in the ordinary slave by "threatening" (Ephesians 6:9).
Singleness - without double-mindedness, hypocrisy, or "eye-service" (Ephesians 6:6), which seeks to satisfy the master's eye, but not to make the master's interest at all times the first consideration (1 Chronicles 29:17; Matthew 6:22-23; Luke 11:34). х Haplotees (G572), 'simplicity:' 2 Corinthians 11:3; Romans 12:8.]