# Now it came about

This phrase is used to mark a new part of the story.

# throughout the whole region

This is an generalization for Peter's visiting the believers in many places in the region of Judea, Galilee, and Samaria. 

# Lydda

Lydda is a city located about 18 kilometers southeast of Joppa. This city is called Lod in the Old Testament and in modern Israel.