Also, I’m not aware of the Catholic Church getting rid of the belief in the KOG or the future resurrection of the dead. The Lord’s Prayer, which is a prayer for the arrival of the kingdom, is said at Mass. Also, the Nicene Creed asserts belief in the future resurrection of the dead.
You probably won’t hear a whole lot of preaching in a Catholic Homily on the Kingdom of God, life of the age to come, or the future resurrection of the dead (I don’t remember hearing these terms much if ever when I attended mass and I know others who say the same), but I’m pretty confident that the future kingdom is still a part of Catholicism. Maybe someone who knows the catechism on this issue can clarify. I just think it’s one of those beliefs that is a part of the faith, but isn’t preached on often.
It might not seem to be “preached on” often, but most certainly is during the Octave of Easter. The Resurrection of the Dead (“the life of the world to come”/Kingdom of God) is one of the most important beliefs in Roman Catholicism. Here is a direct quote from the
Catechism that you can read for yourself.Article 11
“I BELIEVE IN THE RESURRECTION OF THE BODY”
988 The Christian Creed - the profession of our faith in God, the Father, the Son, and the Holy Spirit, and in God’s creative, saving, and sanctifying action -
culminates in the proclamation of the resurrection of the dead on the last day and in life everlasting.
989 We firmly believe, and hence we hope that, just as Christ is truly risen from the dead and lives for ever, so after death the righteous will live for ever with the risen Christ and he will raise them up on the last day.532 Our resurrection, like his own, will be the work of the Most Holy Trinity:
If the Spirit of him who raised Jesus from the dead dwells in you, he who raised Christ Jesus from the dead will give life to your mortal bodies also through his Spirit who dwells in you.533
990 The term “flesh” refers to man in his state of weakness and mortality.534 The “resurrection of the flesh” (the literal formulation of the Apostles’ Creed) means not only that the immortal soul will live on after death, but that even our “mortal body” will come to life again.535
991 Belief in the resurrection of the dead has been an essential element of the Christian faith from its beginnings. "The confidence of Christians is the resurrection of the dead; believing this we live."536
How can some of you say that there is no resurrection of the dead? But if there is no resurrection of the dead, then Christ has not been raised; if Christ has not been raised, then our preaching is in vain and your faith is in vain… But in fact Christ has been raised from the dead, the first fruits of those who have fallen asleep.537
And more,
here:Article 6
“HE ASCENDED INTO HEAVEN AND IS SEATED AT THE RIGHT HAND OF THE FATHER”
659 "So then the Lord Jesus, after he had spoken to them, was taken up into heaven, and sat down at the right hand of God."531 Christ’s body was glorified at the moment of his Resurrection, as proved by the new and supernatural properties it subsequently and permanently enjoys.532 But 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 of ordinary humanity.533 Jesus’ final apparition ends with the irreversible 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.534 Only in a wholly exceptional and unique way would Jesus show himself to Paul “as to one untimely born”, in a last apparition that established him as an apostle.535
660 The veiled character of the glory of the Risen One during this time is intimated in his mysterious words to Mary Magdalene: "I have not yet ascended to the Father; but go to my brethren and say to them, I am ascending to my Father and your Father, to my God and your God."536 This indicates a difference in manifestation between the glory of the risen Christ and that of the Christ exalted to the Father’s right hand, a transition marked by the historical and transcendent event of the Ascension.
661 This final stage stays closely linked to the first, that is, to his descent from heaven in the Incarnation. Only the one who “came from the Father” can return to the Father: Christ Jesus.537 "No one has ascended into heaven but he who descended from heaven, the Son of man."538 Left to its own natural powers humanity does not have access to the “Father’s house”, to God’s life and happiness.539 Only Christ can open to man such access that we, his members, might have confidence that we too shall go where he, our Head and our Source, has preceded us.540
(bold emphasis and italics, mine)