Paul is addressing the Thessalonians, reminding them of the instructions he and his fellow missionaries provided during their visit. These teachings were not just personal opinions or cultural guidelines but were delivered with the authority of Jesus Christ himself. This authority underscores the seriousness and divine origin of the instructions, urging the Thessalonians to adhere to them as part of their Christian walk.
The early church relied heavily on apostolic teaching to understand how to live out their faith. Paul’s reminder serves as an encouragement to remain faithful to the teachings they received, which were meant to guide them in holiness and love. By emphasizing the authority of Jesus, Paul reassures the Thessalonians that following these instructions is a way to align their lives with God's will. This verse also speaks to the broader Christian community, reminding believers to value and adhere to the teachings passed down through spiritual leaders, as these are rooted in Christ's authority.