Of the two parts of our being, one, spiritual and heaven-born, is always active, the other, the bodily, earth-born part, requires frequent and regular rest in sleep. During this time of repose, however, the mind also ceases apparently its operations, merely, however, because it has no longer servants at its command, who are willing and able to give expression to its activity. When the senses are asleep the mind is deprived of the usual means of communication with the outer world; but this does not necessarily condemn it to inaction. On the contrary, it has often been maintained that the mind is most active and capable of the highest achievements when released from its usual bondage to the senses. Already Æschylus in his "Eumenides" says: The mind of sleepers acts more cunningly; The glare of day conceals the fate of men. It seems, however, as if the intermediate state between the full activity of wakeful life and the complete repose of the senses in sound sleep, is most favorable to the development of such magic phenomena as occur in dreams. The fact that the susceptibility of the mind is at that time peculiarly great is intimately connected with the statement recorded in Holy Writ, that God frequently revealed His will to men in dreams. If we admit the antiquity of the book of Job, we see there the earliest known announcement of this connection. "In a dream, in a vision of the night, when deep sleep falleth upon men, in slumberings upon the bed; then He openeth the ears of men and sealeth their instruction" (xxxiii. 15). Next we are told that "God came to Abimelech in a dream by night" (Gen. xx. 3), and from that time we hear of similar revelations made by night in dreams throughout the whole history of the chosen people. Frequently, however, the dreams are called visions. Thus Balaam prophesied: "He hath said, which heard the words of God and knew the knowledge of the Most High, which saw the vision of the Almighty, falling into a trance, but having his eyes open." Daniel had his secret "revealed in a night vision," but such favor was denied to Saul, for "the Lord answered him not, neither by dream nor by Urim, nor by prophets." To Solomon, on the contrary, "the Lord appeared in a dream by night" many times; Joel was promised that "old men should dream dreams and young men shall see visions," a pledge quoted by St. Peter as having been amply fulfilled in his day (Acts ii. 17). For dreams did not lose their importance at the coming of Christ. To his reputed father "the Angel of the Lord appeared in a dream," bidding him to take Mary to his wife; again he was warned in a dream "not to return to Herod," and the Lord spake "to Paul in the night by a vision" more than once, as he was by a dream also sent to Macedonia.