What does it mean that God's Word will not return void?

When the Scripture states that God's Word will not return void, it underscores the certainty that what God declares will indeed come to pass. Isaiah 55:11 articulates this promise: 'So shall my word be that goes out from my mouth; it shall not return to me empty, but it shall accomplish that which I purpose.' This highlights the active power and effectiveness of God's Word in the hearts of believers and in the unfolding of His divine plan. For those who preach and teach the Gospel, this assures us that our labor is not in vain when we declare the truth of God's Word, as it carries inherent authority and transformative potential.