# Behold

This word introduces something surprising. Your language may have a way of doing this.

# What do we have to do with you, Son of God?

This question can be translated as a statement. The demons were speaking in a hostile way. Alternate translation: "You have nothing to do with us, Son of God!" or "You have no right to bother us, Son of God!" 

# Son of God

This is an important title for Jesus, which describes his relationship to God. 

# Have you come here to torment us before the set time?

This question can also be translated as a statement.  Alternate translation: "You have no right to punishment us before the time for that!"