Matthew 28:18
18 Jesus came and told his disciples, “I have been given all authority in heaven and on earth.
Notice that Jesus has authority in Heaven, because He is the Son of God. He is fully God and fully Man. And He has come to the earth to take back the Authority of the earth.
In the midst of the Lord’s Prayer…
Matthew 6:10
10 May your Kingdom come soon.
May your will be done on earth,
as it is in heaven.
But when people keep on sinning, it shows that they belong to the devil, who has been sinning since the beginning. But the Son of God came to destroy the works of the devil.
Luke 10:16-20
16 Then he said to the disciples, “Anyone who accepts your message is also accepting me. And anyone who rejects you is rejecting me. And anyone who rejects me is rejecting God, who sent me.”
17 When the seventy-two disciples returned, they joyfully reported to him, “Lord, even the demons obey us when we use your name!”
18 “Yes,” he told them, “I saw Satan fall from heaven like lightning!
19 Look, I have given you authority over all the power of the enemy, and you can walk among snakes and scorpions and crush them. Nothing will injure you. 20 But don’t rejoice because evil spirits obey you; rejoice because your names are registered in heaven.”