In this passage, Jesus is preparing his disciples for his imminent departure through his crucifixion and eventual ascension. He reassures them by explaining that his going away is not a permanent separation but a necessary step in God's divine plan. Jesus' statement that the Father is greater than he is often understood as reflecting his role within the Trinity during his earthly ministry, where he humbly submits to the Father's will. This does not diminish his divinity but rather illustrates the perfect unity and love within the Godhead.
The disciples are encouraged to rejoice in Jesus' return to the Father, as it signifies the completion of his mission on earth and the beginning of a new phase in God's redemptive plan. This passage invites believers to find comfort in the knowledge that Jesus' departure was not an end but a transition to a new way of being present with his followers through the Holy Spirit. It also assures them of his promise to return, providing hope and encouragement to remain faithful.