One of the things that helps us obey is knowing from whom the command comes, how much authority they have, and how much doing what they ask will matter. If the command comes from a coworker - it will not have the same impact as if it had come directly from the boss. Well, we have commands that have come directly from the Lord. The Thessalonians believers understood that the word that the Apostle gave them was in truth - the word of God. And they responded accordingly.
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