210. Therefore I have said that it was not to our advantage to know; nay, it is to our advantage to be ignorant, that through ignorance we might fear, through watchfulness be corrected, as He Himself said: “Be ye ready, for ye know not at what hour the Son of Man cometh.” S. Matt. xxiv. 44. For the soldier does not know how to watch in the camp unless he knows that war is at hand.