(Proverbs 13:17 KJV) A wicked messenger falleth into mischief: but a faithful ambassador is health.
The Treasury of Scriptural Knowledge, part of my free software from e-sword, tells me that “faithful” (529) “ambassador” (envoy NASB) (6735a) is literally “ambassador of faithfulness” in the Hebrew. I like that. It adds a dimension beyond ourselves.
My initial understanding was that we are to be faithful. That is still true. By being obedient and consistent we can be agents of God’s grace. The burden is that we can begin to feel that the results depend on our faithfulness. A little of that can be healthy and spur us to improve.
Learn to believe and emphasize the Biblical Hebrew. We are ambassadors of God’s faithfulness. That is the deeper meaning. To me it is the more comfortable part of the truth. God will be faithful. He will work around me if He needs to. He does not make me an envoy because He is looking at the last ditch effort to see His will fulfilled. He lets me be an envoy so that I can realize the joy of being part of His plan to redeem.
So? Rejoice. The eternal fate of the person you care about does not rest on your weak shoulders. It is in God’s faithful hands. If you feel like you have not succeeded, improve if you can but don’t be overwhelmed. It is grace and the power of the Holy Spirit that brings the truth to hearts. We are but messengers.