in him," means that I have given to the body of man a well balanced constitution with power and motion. I have made it capable of receiving the law, and to be a home for the knowledge of God.
In the same manner as the equilibrium of the inferior spirit is to be preserved by the science of medicine, the equilibrium of the human spirit is to be preserved by virtue, self-denial and holy zeal, that it may not be destitute of the love of God and perish.
It is plain, then, that a knowledge of the future world cannot be acquired, until we have learned the true nature of the two spirits. We cannot obtain, for example, a knowledge of God, unless we previously possess a knowledge of the soul. But as Islamism consists essentially in believing and confessing the Lord God and the future world, it becomes our duty to acquire a knowledge of the future world as far as the thing is possible. There is, however, a mystery regarding the future world, which the holy law has not authorized to be explained or to be mentioned, be,cause it could not possibly be understood. Seeing then that the knowledge of the future world cannot possibly be acquired, until that mystery is revealed, strive that it may be revealed in your own soul by pious endeavor, self-denial and divine guidance. You cannot learn it by any possible efforts from any other person by the hearing of the ear. Many persons have heard this mystery, which represents one of the attributes of God, but they did not acknowledge it as true, and said that it was impossible, not because it was in its nature exempt from being known, but because it was an unemployed mystery. It is not named either in the Koran or in the Traditions. God commanded the prophets not to inform the people of the essence of his attributes, saying "for they will not understand them, will accuse you of falsehood, and will do injury to themselves."
