# for the synagogues

"for the people in the synagogues" or "for the leaders in the synagogues" 

# if he found any people who belonged to the Way

"when he found people who followed the teachings of Jesus Christ" or "if he found people who followed the teachings of Jesus Christ"

# he might bring them bound to Jerusalem

"Paul's purpose can be made clear by adding "so that the Jewish leaders could judge and punish them"