## he went down ##

"Jesus went downhill." Capernaum was lower in altitude than Nazareth.

## Capernaum, a city in Galilee ##

Since Jesus was already in Galilee, this could be translated as "Capernaum, another city in Galilee."

## astonished ##

"greatly surprised" or "impressed"

## he spoke with authority ##

This could be translated as "his word had authority" or "he spoke as one with authority."