Luke 10:16 He that heareth you heareth me; and he that despiseth you despiseth me; and he that despiseth me despiseth him that sent me.
Luke 10:17 And the seventy returned again with joy, saying, Lord, even the devils are subject unto us through thy name.
Luke 10:18 And he said unto them, I beheld Satan as lightning fall from heaven.
Luke 10:19 Behold, I give unto you power to tread on serpents and scorpions, and over all the power of the enemy: and nothing shall by any means hurt you.
Luke 10:20 Notwithstanding in this rejoice not, that the spirits are subject unto you; but rather rejoice, because your names are written in heaven.
Luk 15:7 I say unto you, that likewise joy shall be in heaven over one sinner that repenteth, more than over ninety and nine just persons, which need no repentance.
The disciples were sent out in twos to witness the gospel to the lost. They were representing Jesus who was sent by God the Father. Those who received or rejected their message received or rejected them and also Jesus and God the Father. Do you see the authority in our witness of the gospel message? Even the devils are subject to the witness in the name of Jesus. His name and his authority is greater than the powers of darkness. As we see an increase of darkness in our land we see those who try to remove the name of Jesus, even the name "Christmas". There is no greater name nor power than Jesus. Jesus was there when satan was cast from his place in heaven. He booted satan from heaven and certainly he has authority over him on earth. We have His authority through receiving Jesus as our master. The authority is in the name of Jesus. Some seek to be followers of Christ to have this power. Simon the sorcerer wanted to purchase this power and he was rebuked by Peter.
Acts 8:18 And when Simon saw that through laying on of the apostles' hands the Holy Ghost was given, he offered them money,
Acts 8:19 Saying, Give me also this power, that on whomsoever I lay hands, he may receive the Holy Ghost.
Acts 8:20 But Peter said unto him, Thy money perish with thee, because thou hast thought that the gift of God may be purchased with money.
This Spirit and power comes through faith in Jesus Christ. Jesus is the power to overcome the devil and his workers. The power to witness is through the Holy Spirit. This power is from God for his purpose and not for personal glory, Jesus said that we are not to be rejoicing in the power over devils, but more so that our names are written in heaven. Some pretend to have the power who are not even saved. The world seeks power and may use any means to get it, even through deception.
Mat 7:22 Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out devils? and in thy name done many wonderful works?
Mat 7:23 And then will I profess unto them, I never knew you: depart from me, ye that work iniquity.
Is your salvation sure? Do you know that your name is written in heaven? Are you serving God by the power of the Holy Spirit? If not then you come humbly and receive Jesus as your Lord and savior. Get close to him, hear him and obey him. He will lead you and the Holy Spirit will guide you in your daily activity.
Rev 12:11 And they overcame him by the blood of the Lamb, and by the word of their testimony; and they loved not their lives unto the death.
Rev 12:12 Therefore rejoice, ye heavens, and ye that dwell in them...