The mission of Christ is to destroy the works of the devil, as described in 1 John 3:8:
He that committeth sin is of the devil, for the devil sinneth from the beginning. For this purpose the Son of God was manifested, that He might destroy the works of the devil.
1 John 3:8
But what does this mean? It means that the mission of Christ is to reverse all the damage that was done when Satan lied to and deceived Eve, and to reverse all of the corruption and wickedness that followed as a result of this.
The mission of Christ is to restore humanity and the world to its former state of glory; of the holy, pure, and uncorrupted state before man fell; restoring the world to the perfect paradise that once existed with the Garden of Eden. And most importantly, the mission of Christ is to restore the broken relationship between man and God which occurred when mankind first disobeyed God by eating the Forbidden Fruit.
The restored paradise is the New Jerusalem as described in the book of Revelation, which shall be established on earth immediately after the Second Coming of Christ. It shall be like the Garden of Eden but far more glorious. In this paradise man will have glorified, immortal bodies like the body Jesus was given in His resurrection. And God shall make New Jerusalem His dwelling place, dwelling among men, signifying mankind’s restored relationship with God.
The entirety of Christ’s mission on earth in His First Coming was to set in motion all of the events required for the New Jerusalem to be established in the future; to restore everything as it once was in the Garden. In saying the Lord’s Prayer, one is asking for this mission to be fulfilled; asking for God’s kingdom and His law to be re-established on earth as it once was in the Garden of Eden.
