But you will receive power when the Holy Spirit comes upon you. And you will be my witnesses, telling people about me everywhere—in Jerusalem, throughout Judea, in Samaria, and to the ends of the earth.” (Acts of the Apostles 1:8 NLT)
The Greek word for power here is “Dunamis” it is the power for performing miracles, moral power and excellence of soul, power to overcome sin.
You will receive the power to overcome sin when the Holy Spirit comes upon you!!! You will receive boldness to speak the gospel when the Holy Spirit comes upon you!!!
Jesus says in Acts 1:5 and 8 that baptism in the Spirit means, “You shall receive power . . . and you shall be my witnesses.” This is an experience of boldness and confidence and victory over sin. A Christian without power is a Christian who needs a baptism in the Holy Spirit!!
All you have to do is ask for the Holy Spirit!