Be not forgetful of prayer. Every time you pray, if your prayer is sincere, there will be new feeling and new meaning in it, which will give you fresh courage, and you will understand that prayer is an education. Remember, too, every day and whenever you can, to repeat to yourself, “Lord, have mercy on all who appear before you today.” For every hour and every moment thousands of people leave life on this earth, and their souls appear before God.…How touching it must be to a soul standing in dread before the Lord to feel at that instant that for him too there is one to pray, that there is a fellow creature left on earth to love him. And God will look on you both more graciously, for if you have had so much pity on him, how much more will He have pity who is infinitely more loving and merciful than you. And He will forgive him for your sake.
Source: The Brothers Karamazov, as quoted in The Gospel in Dostoyevsky