Concept:Paul sets an example of self-reliance and honest labor so that believers would learn not to depend on others for financial support.
Explanation:In his letter, Paul reminds the Thessalonians that he worked night and day while he was with them.
He deliberately chose to support himself instead of being a financial burden to the church.
Paul knew he had the right to receive help, but he gave up that right to become a model for them.
His action was not about miracles, healing, or demanding support from converts.
Rather, he worked hard for his own personal upkeep and encouraged the Thessalonians to imitate that same diligence.
Answer:D. working for his personal upkeep