In Acts 6, the apostles are praying, the word of God is increasing, and the disciples are multiplying.
The result is a great company of the priests ended up being obedient to the faith.
This is the mighty power of the gospel!
The power of the gospel can take a selfish priest, full of pride, and humble him.
But what is also worth noting is that before the word of God went out and before the disciples were able to multiple; prayer was their top priority.
So, before you go out and witness for Christ, it's best to PRAY first!