What does the Bible say about the effectuality of God's Word?

In 1 Thessalonians 2:13, Paul expresses gratitude that the Word of God is received not merely as human teachings but as the true Word of God, which effectually works in those who believe. This means that the Word of God is successful in achieving the desired effects, such as bringing about faith and transformation in the lives of believers. The effectual nature of God's Word highlights its divine authority and power, which works through the Holy Spirit to bring about salvation and sanctification in the hearts of those who receive it.