# Behold
This marks the beginning of another event in the larger story. Your language may have a way of showing this.
# they brought
"some men from the city brought"
# Son
The man was not Jesus's real son. Jesus was speaking to him politely. If this is confusing, it can also be translated "My friend" or "Young man" or even omitted.
# Your sins have been forgiven
"I have forgiven your sins"