JOY Luke 10:17-20 Part 2 of 2

The seventy-two returned with joy and said, "Lord, even the demons submit to us in your name." He replied, "I saw Satan fall like lightning from heaven. I have given you authority to trample on snakes and scorpions and to overcome the power of the enemy; nothing will harm you. However, do not rejoice that the spirits submit to you, but rejoice that your names are written in heaven."  

I have given you authority to trample on snakes and scorpions 
Mark 16:18  "... they will pick up snakes with their hands; and when they drink deadly poison, it will not hurt them at all; they will place their hands on sick people, and they will get well." (only by the authority of Jesus and in his name)
Acts 28:3-5  Paul gathered a pile of brushwood and, as he put it on the fire, a viper, driven out by the heat, fastened itself on his hand. When the islanders saw the snake hanging from his hand, they said to each other, "This man must be a murderer, for though he escaped from the sea, the goddess Justice has not allowed him to live." But Paul shook the snake off into the fire and suffered no ill effects.

rejoice that your names are written in heaven 
Revelation 20:12  And I saw the dead, great and small, standing before the throne, and books were opened. Another book was opened, which is the book of life. The dead were judged according to what they had done as recorded in the books.
Revelation 20:15  Anyone whose name was not found in the book of life was thrown into the lake of fire. 

(parentheses are mine)

Scriptures taken from the Holy Bible, New International Version® NIV®, Copyright© 1973, 1978, 1984, 2011 by Biblica, Inc.™ Used by permission. All rights reserved worldwide.