How do we know God blesses the preaching of His Word?

Acts 6 demonstrates that God blesses the activities of His church when they are centered around preaching and teaching the Gospel. Despite facing external opposition, the early church experienced remarkable growth. The apostles committed themselves to prayer and the ministry of the Word, clearly indicating that these were the means through which God's blessings flowed. As a result, not only was the number of disciples multiplied greatly, but even the priests became obedient to the faith. This illustrates that God’s power and blessing accompany those who faithfully preach His Word and rely on His Spirit for their work.