New Defender's Study Bible Notes
4:11 study. One should “diligently strive” to be silent and calm except when speaking is necessary, gracious and purposeful (note Colossians 4:6). Christ soberly warns against every “idle word” (Matthew 12:36) and Paul against “foolish talking” (Ephesians 5:4).
4:11 your own business. “Your own business” (Greek idios) places emphasis on one’s own affairs, not those of others (note I Peter 4:15).
4:11 your own hands. Paul set the example himself (II Thessalonians 3:8-9). Idlers are out of place in the Christian ministry (note Matthew 20:6).