Acts 1:8. But you will receive power when the Holy Spirit comes on you; and you will be my witnesses in Jerusalem, and in all Judea and Samaria, and to the ends of the earth.
The Holy Spirit lives in those who believe that Jesus is the Christ (John 14:16; John 14:26). This is not a temporary presence but an eternal indwelling—God Himself dwelling within His people. But to whom does the Holy Spirit work most powerfully?
Jesus answers that question in Today’s Word. The Holy Spirit works most powerfully in the lives of Christ’s witnesses, filling them with power from above and enabling them to testify to the gospel. Evangelism and the work of the Holy Spirit are inseparable. Where the gospel is proclaimed, the Holy Spirit is at work; and where the Holy Spirit is at work, the gospel is proclaimed.
What, then, is the filling of the Holy Spirit? To be filled with the Holy Spirit means that nothing else ultimately governs or controls our spirit, soul, heart, and mind. By nature, we are filled with what has been deeply imprinted in us—our past experiences, wounds, habits, and ways of thinking. These things take root and shape our nature. But when the Holy Spirit works in us, He gradually replaces these with the things of God—His truth, His perspective, and His desires.
First, the Holy Spirit fills us with the Word and the gospel. He reminds us of the Word, teaches us the Word, and leads us according to the Word. He heals our hearts and minds through the power of the Word and brings to life what once felt distant or merely intellectual.
Life as a child of God is therefore easy, light, and powerful (Matthew 11:28–30)—not because circumstances are always easy, but because the Holy Spirit carries the true burden. This life has the highest value in the sight of God because it is sustained and directed by Him.
How, then, does the Holy Spirit work in the lives of Christ’s witnesses? When we follow the Great Commission Jesus has given us, we experience the greatest blessing of all—His constant presence:
“Then Jesus came to them and said, ‘All authority in heaven and on earth has been given to me. Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, and teaching them to obey everything I have commanded you. And surely I am with you always, to the very end of the age’” (Matthew 28:18–20).
As we take the gospel into the field, the Lord Himself works with us:
“After the Lord Jesus had spoken to them, he was taken up into heaven and he sat at the right hand of God. Then the disciples went out and preached everywhere, and the Lord worked with them and confirmed his word by the signs that accompanied it” (Mk 16:19-20).
When our life itself becomes evangelism, the Holy Spirit gives us, day after day, undeniable evidence of His power so that we may boldly speak what we have seen and heard (Acts 1:8). Evangelism is no longer a task we carry out occasionally, but the natural expression of a life filled with the Spirit and centered on Christ.
Evangelism is not something we merely do; it is the fulfillment of the Word (Acts 2:13–36). It unfolds according to God’s timing and sovereignty—it is His appointed time for salvation:
“When the Gentiles heard this, they were glad and honored the word of the Lord; and all who were appointed for eternal life believed” (Acts 13:48).
This is why prayer is so essential in evangelism. Through prayer, we engage in the true spiritual battle. We pray for the kingdom of darkness to be broken in the lives of those who do not yet believe. We pray to become sensitive to the leading of the Holy Spirit in every encounter. We pray that the Holy Spirit will enable us to speak the gospel with clarity, wisdom, and boldness, even when we face opposition to the Way.
You are a child of God. Restore each day the joy and the worth of your salvation. Do not let it become routine or religious. Continually discover Christ in the Word, and make knowing and experiencing the joy of the Lord and the power of Christ the highest priority in your life.
Learn to see the world through a spiritual lens. Behind visible problems lies a deeper spiritual need—the absolute need for the gospel. Therefore, ask for wisdom from above so that you may live carefully and intentionally, not as unwise but as wise. Make the most of every opportunity to do good and to share the gospel, because these are evil times (Ephesians 5:15–16).
The only way to overcome our weaknesses, the pressures of the world, and the attacks of Satan is to be filled with the Holy Spirit (Ephesians 5:18). This is not automatic—we must seek it and ask for it by faith, continually depending on Him.
In all circumstances, hold to and experience the confession that “Jesus is the Christ, the Son of the living God” (Matthew 16:16). Let Him guide and govern your life. Make Christ the Lord of your life, just as Paul confessed:
“I have been crucified with Christ and I no longer live, but Christ lives in me. The life I now live in the body, I live by faith in the Son of God, who loved me and gave himself for me” (Galatians 2:20).
Always remain aware of the presence of the Holy Spirit within you. Yield to Him daily, seeking His will rather than your own. Do not rely on your own standards or judgments when you see people, because the Holy Spirit—who transcends time and space—can work in unexpected people, in unexpected places, at unexpected times.
You are an evangelist for this age, prepared by God long before time. He will take full responsibility for your life. Therefore, do not be anxious about anything. Stand in faith, knowing that nothing can ultimately harm you under His sovereign care.
God will establish His church upon the foundation of your confession of faith in Christ Jesus, and the kingdom of Satan will not be able to overcome it (Matthew 16:18). God will also release the authority and power of His throne to accomplish His will—bringing salvation to lives (Matthew 16:19).
Prayer. Father, I thank You for the power of Your Holy Spirit at work within me. Open my eyes to see the fields ready for harvest and give me boldness to proclaim the gospel. Lead me by Your Spirit each day so that my life may become a testimony of Christ. Send me to the ends of the earth to bear witness for Him. In the name of Jesus Christ, Amen.