The power of prayer is, of course, a mystery, _i.e._, a truth, but a truth partly concealed, partly plain. To deal with it, therefore, in a mathematical temper rather than a moral temper is absurd if not wrong. Mathematical demonstration cannot be given for moral truth, and is in fact out of court. The bent of mind formed by constant scientific research--good as it is in its own province--sometimes unfits men for moral and theological research. In this way the "difficulties of prayer" are often exaggerated. (1) It is said God knows already; why tell Him? The same objection would apply to many a request on earth. (2) It is said God fore-sees; why try to influence what He knows is sure to be? This objection applies to all our actions; to follow out this we should not only not pray, but also never do anything. We are in face of a mystery. A little humility and obedience to revelation helps us out. It has been truly said that when a practical and a speculative truth are in apparent collision, we must remember our ignorance of a good many things, and act with the knowledge which is given us, on the practical truth. Prayer, we may remember, is not to change the holy counsels of the Eternal, but to accomplish those ends for which it is an appointed instrument. Anyhow, this is certain, the abundant promises to faithful and persevering prayer are kept, and--where God sees it to be good for us--they are kept to the letter. The following are examples which come within the knowledge of the writer of this paper. A family, consisting of a number of children, had been brought up by parents who had very "free" ideas as to the divine revelation and the teaching of the Church. The children, varying in age from seven or eight, to one or two and twenty years, had, one way or another, been aroused to the teaching of Scripture and desired to be baptised. The father point-blank refused to permit it. The older members of the family consulted a clergyman. He felt strongly the force of the fifth commandment and advised them not to act in haste, to realise that difficulties do frequently arise from conflicting duties, and above all to pray. The clergyman asked a number of devout Christians to make the matter a subject of prayer. They did. In about three weeks the father called upon this very clergyman and asked him to baptise his children. The clergyman expressed his astonishment, believing that he was opposed to it. The father answered that that was true, but he had changed his mind. He could not say precisely why, but he thought his children ought to be baptised. They were; and he, by his own wish, was present and most devout at the administration of the sacrament of baptism.