There are some requests the answer to which returns with the speed of a flash of light, as, for instance, when we ask God to give us some Christian grace or disposition of heart. The giving comes with the asking.[7] A man may not be strong enough to retain the gift, but it actually becomes his before he rises from his knees. The rationalist will object to this, that such an answer to prayer is nothing more than the subjective effect of a given attitude of mind. Granted; but that makes it none the less the direct work of God. Secondary or scientific causes exhibit to the observer the method by which God fulfils His purposes. The stone falls to the ground according to the law of gravitation, but God is behind the law controlling it. The distinguishing feature of the Jewish mode of thought was the way in which it related all things to God's immediate activity. The Old Testament is the book of God's immanence. The present attitude of mind leads men to rest in all causes short of God, and even to forget the need of a Cause of causes. An earnest student of nature remarked upon leaving her microscope: "I have found a universe worthy of God." She at least felt that a revelation of secondary causes was, at the same time, a new revelation of the God of causes. If it could be proved that all answers to prayer came according to the working of natural law, it would not eliminate God from the process, or have any sort of bearing upon the efficacy of prayer. All we know of God's method of work demonstrates His love of law; and it would be no surprise, but rather what we should expect, to find that all the unseen stretches of life are equally within the domain of His law and order.[8]