It is stated here w88 8/15 20 as a requirement: Using Matt 24:14 and 28:19,20...
Exerting Ourselves in the Field w88 8/15 20
17 For many, though, the greatest challenge is fulfilling the Christian commission to preach the good news. (Matthew 24:14; 28:19, 20) Some have but a minimal share in the field service, perhaps arguing that the pressures of earning a living and raising a family make it difficult for them to do more. Granted, the pressures of “the last days” are formidable. (2 Timothy 3:1) Jesus, however, warned against becoming ‘weighed down with anxieties of life.’ As conditions worsen, Christians should ‘raise themselves erect and lift their heads up.’ (Luke 21:28, 34) One of the best ways to “stand firm” against Satan’s attacks is to have our “feet shod with the equipment of the good news”—regularly sharing in preaching!—Ephesians 6:14, 15.
- Now The Guilt trip...
19 If we are not moved to preach, then our love for Jehovah and our trust in him is little more than mental awareness. “Know the God of your father and serve him with a complete heart,” David exhorted Solomon, “for all hearts Jehovah is searching, and every inclination of the thoughts he is discerning.” (1 Chronicles 28:9) Jehovah is not fooled by lukewarm efforts. Even a regular share in field service does not satisfy him if we offer only a mere token of what we could do if we were ‘exerting ourselves vigorously.’ (Luke 13:24) Each Christian must thus make an honest appraisal of his share in the field service and ask himself: ‘Am I really doing all I can?’ Perhaps adjustments in our priorities need to be made.
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