From the Broken Pieces Blog. Jesus preached with power and authority. If we allow the Holy Spirit who dwells in us to work, we can also proclaim the Gospel with power and authority!
From the post:
“And came down to Capernaum, a city of Galilee, and taught them on the sabbath days. And they were astonished at His doctrine: for His word was with power.” Luke 4:31-32 (KJB)
Speaking of Jesus of course; He spoke amazing things. His doctrine [teaching] was with power and authority which is probably a redundancy, but for strength and clarity, it is repeated.