If you could see how many daggers, spears, and arrows are aimed at you every moment, you would be glad to come to the sacrament as often as you can. The only reason we go about so securely and heedlessly is that we neither imagine nor believe that we are in the flesh, in the wicked world, or under the kingdom of the devil.
Martin Luther, Large Catechism, V.82
Locus Communis 