# so they asked each other, "What is this? ... they obey him!"

"so they said to each other, 'This is amazing! ... they obey him!'" 

# A new teaching with authority!

"He gives a new teaching, and he speaks with authority!" or "He teaches something new, and he has authority!" 

# He even commands the unclean spirits and they obey him!

This was evidence of Jesus' authority.