## but there was a certain man  ##

"a certain man…named Simon" is a way of introducing a new person into the story. You need to be aware of how new people are introduced in your language. (See: en:ta:workbench:discourse:home)

## the city ##

"the city in Samaria"

## all the Samaritans  ##

This is a hyperbole for "many of the Samaritans in the city." (See [[rc://en/ta/man/translate/figs-hyperbole]])

## This man is that power of God which is called Great ##

People were saying that Simon is the divine power known as The Great Power.