"Behold, I make all things new." (Rev 21:5) "The former heaven and the former earth had passed away, and the sea was no more. He will wipe every tear from their eyes, and there shall be no more death or mourning, wailing or pain." This is "the new heaven and the new earth" revealed to John in a vision from God. The materialistic world is no longer an obstacle for the human race to embrace God because Jesus has sanctified the world. When mankind receives the Holy Eucharist, their bodies become blessed and share the Life of God. Their flesh becomes the earth's nutrients, and as they die and return to the earth, the flesh becomes "Eucharist" to the earth. Henceforth the earth is also blessed by God. Therefore, mankind's "death and mourning, wailing and pain" become significant through Christ's sufferings, because together with Jesus, we are offering our sacrifice for the world's redemption. Therefore our purpose of existence is to witness "Love", which is the essence of God. Love does not signify living for oneself. Instead, it entails offerings and contributions to the harmony of the world.