Many Christian teachings are hard to understand. They are revealed by God, and we can spend a lifetime probing their richness and significance. One of these teachings that is hard to understand is the promised coming of Christ at the end of time, to establish the fullness of the Kingdom. This seems like a science fiction story to modern ears, and something that is fearful. But in reality it is a profound Mercy of God, and something that is meant to strengthen us to persevere filled with Hope, Peace, and Love. Knowing that the victory of Christ over sin and death has already occurred, and will be finally established at the end, helps us to work for that coming with a healthy detachment, knowing the fight is not ours but God's, it is made present by our witness to it.