The fourth rule of prayer is, that notwithstanding of our being thus abased and truly humbled, we should be animated to pray with the sure hope of succeeding. There is, indeed, an appearance of contradiction between the two things, between a sense of the just vengeance of God and firm confidence in his favour, and yet they are perfectly accordant, if it is the mere goodness of God that raises up those who are overwhelmed by their own sins. For, as we have formerly shown (chap. iii. sec.1, 2) that repentance and faith go hand in hand, being united by an indissoluble tie, the one causing terror, the other joy, so in prayer they must both be present. This concurrence David expresses in a few words: "But as for me, I will come into thy house in the multitude of thy mercy, and in thy fear will I worship toward thy holy temple" (Ps.5:7). Under the goodness of God he comprehends faith, at the same time not excluding fear; for not only does his majesty compel our reverence, but our own unworthiness also divests us of all pride and confidence, and keeps us in fear. The confidence of which I speak is not one which frees the mind from all anxiety, and soothes it with sweet and perfect rest; such rest is peculiar to those who, while all their affairs are flowing to a wish are annoyed by no care, stung with no regret, agitated by no fear. But the best stimulus which the saints have to prayer is when, in consequence of their own necessities, they feel the greatest disquietude, and are all but driven to despair, until faith seasonably comes to their aid; because in such straits the goodness of God so shines upon them, that while they groan, burdened by the weight of present calamities, and tormented with the fear of greater, they yet trust to this goodness, and in this way both lighten the difficulty of endurance, and take comfort in the hope of final deliverance. It is necessary therefore, that the prayer of the believer should be the result of both feelings, and exhibit the influence of both; namely, that while he groans under present and anxiously dreads new evils, he should, at the same times have recourse to God, not at all doubting that God is ready to stretch out a helping hand to him. For it is not easy to say how much God is irritated by our distrust, when we ask what we expect not of his goodness. Hence, nothing is more accordant to the nature of prayer than to lay it down as a fixed rule, that it is not to come forth at random, but is to follow in the footsteps of faith. To this principle Christ directs all of us in these words, " Therefore, I say unto you, What things soever ye desire, when ye pray, believe that ye receive them, and ye shall have them" (Mark 11:24). The same thing he declares in another passage, "All things, whatsoever ye shall ask in prayer, believing, ye shall receive" (Matth.21:22). In accordance with this are the words of James, "If any of you lack wisdom, let him ask of God, that giveth to all men liberally, and upbraideth not, and it shall be given him. But let him ask in faith, nothing wavering" (James 1:5). He most aptly expresses the power of faith by opposing it to wavering. No less worthy of notice is his additional statement, that those who approach God with a doubting, hesitating mind, without feeling assured whether they are to be heard or not, gain nothing by their prayers. Such persons he compares to a wave of the sea, driven with the wind and tossed. Hence, in another passage he terms genuine prayer "the prayer of faith" (James 5:15). Again, since God so often declares that he will give to every man according to his faith he intimates that we cannot obtain anything without faith. In short, it is faith which obtains everything that is granted to prayer. This is the meaning of Paul in the well known passage to which dull men give too little heed, "How then shall they call upon him in whom they have not believed? and how shall they believe in him of whom they have not heard?" "So then faith cometh by hearing, and hearing by the word of God" (Rom.10:14, 17). Gradually deducing the origin of prayer from faith, he distinctly maintains that God cannot be invoked sincerely except by those to whom, by the preaching of the Gospel, his mercy and willingness have been made known, nay, familiarly explained.