God's preaching is effective because it is accompanied by power through the Holy Spirit (1 Thessalonians 1:5).
The Apostle Paul emphasizes the effectiveness of God's preaching in 1 Thessalonians 1:5, stating that 'Our gospel came not unto you in word only, but also in power, and in the Holy Ghost, and in much assurance.' This passage reflects that true preaching is empowered by the Holy Spirit and results in transformed lives. Thus, genuine sermons about Christ produce both conviction and assurance, leading believers to follow the Lord in faith. Furthermore, preaching must be sent by God to be effective, which aligns with the biblical notion that faith comes by hearing the word that is rightly preached (Romans 10:15).
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