4.18; Ascension:
The Resurrection signified Christ's victory over sin and death and initiated his glorification.
Through Christ's new/ glorified body, He now transcends (to be and/ or go beyond limits) human time and space.
After this event, his followers could now fully recognize him. (Before the ascension, JC's followers could not immediately recognize him)
-Quote From CCC 659: "During the forty days when he eats and drinks familiarly with his disciples and teaches them about the kingdom, his glory remains veiled under the appearance eof ordinary humanity. Jesus' final apparition ends with the irresversible entry of his humanity into divine glory, symbolized by the cloud and by heaven, where he is seated from that time forward at God's right hand."
Near the end of JC's time, Jesus spent most of his time teaching/ instructing his Apostles as well as confirming them in their faith.
This is where the Catholic Church gets the practice of CConfirmation.
During this time, JC was also preparing them for the Holy Spirit. (hint: Pentecost)
Christ's mission was fulfilled and his glorification completed with his Ascension into Heaven. With his Apostles gathered around him, Christ ascened Body and Soul into Heaven in a clear manisfestation of his divinity.
By ascending into Heaven, Christ opened the gates to Heaven for the rest of his Church
Christ's Final instructions before he left the physical world was: they were to define the misson of the Apostles and the Church until the end of time. He wanted them to evanglize all nations.
Christ emphasized that it was necessary for him to leave the earth and be with his father in heaven. He would remain here with us spiritually.
The Ascension of our Lord also initiated another kind of relationship between himself and his Church-- a relationship founded on a life of faith, hope, and love.