Believers have been filled with the Holy Spirit and given the power to spread the good news of Jesus Christ.
Acts 1:8 But you will receive power when the Holy Spirit has come upon you, and you will be my witnesses in Jerusalem and in all Judea and Samaria, and to the end of the earth.”
2 Timothy 1:8 Therefore do not be ashamed of the testimony about our Lord, nor of me his prisoner, but share in suffering for the gospel by the power of God,
Philippians 1:14 And most of the brothers, having become confident in the Lord by my imprisonment, are much more bold to speak the word without fear.
1 Peter 3:15 but in your hearts honor Christ the Lord as holy, always being prepared to make a defense to anyone who asks you for a reason for the hope that is in you; yet do it with gentleness and respect,
A witness can only testify to what that have seen or experienced. When the miracle of salvation occurs in our own lives, we have something of value to share with others. We can speak with authority and boldness about what Jesus has done in our lives. Jesus has entrusted His disciples to continue to spread the message of the gospel after He ascended to heaven. We have the blessing of being a witness by bearing the marks of Christ so that our life gives life to others.