This weekend we will celebrate the great Solemnity of Christ the King, instituted in 1925 by pope Pius XI. "When the Son of Man comes in his glory, escorted by all the angels of heaven, he will sit upon his royal throne, and all the nations will be assembled before him." (Mt 25) We worship Jesus Christ as Lord and King because he is victorious in the battle over sin and death. In His resurrection, which we celebrate and in which we participate at every Eucharistic Sacrifice, our Lord established His rule over all creation, and overcame in Himself the effects of the sin of Adam. Christ is Lord, for he has conquered what we fear most and have no power against, the cruel and bitter specter of death. We cannot but exult and shout for joy with the knowledge that we can share in His Resurrection. We share in the Resurrection in the first place by meeting Christ in the liturgy, in Word and Sacrament. The Christ we receive in the Eucharist is the Easter Christ, the risen and glorified Christ as he is now victoriously seated at the right hand of the Father in glory. (explanation used from Fr. Cusick)
 
This is a very triumphant reminder of the fact that Jesus reigns in heaven. Christus vincit, christus regnat! Christ has conquered! Christ reigns!