How do we know that Paul's preaching was effective?
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Paul's preaching was effective because the Thessalonians received it not as the word of men, but as the Word of God, which worked powerfully in those who believed.
In 1 Thessalonians 2:13, Paul expresses gratitude that the Thessalonians received his message not merely as human words but as the divine truth; this indicates that the gospel's effectiveness lies in its divine origin. The transformation witnessed among the believers in Thessalonica further attests to the gospel's power. They turned from idols to serve the living and true God, evidencing the Holy Spirit's transformative work. This effectiveness underscores the sovereign work of God in salvation, affirming the theology of grace and the power of the gospel as manifested through faithful proclamation.
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