In the preceding discourse upon this text, we directed attention to the fact that man is possessed of the power of self-knowledge, and that he cannot ultimately escape from using it. He cannot forever flee from his own presence; he cannot, through all eternity, go away from his own spirit. If he take the wings of the morning and dwell in the uttermost parts of the earth, he must, sooner or later, know himself, and acquit or condemn himself.

Our attention was then directed to the fact, that God's knowledge of man is certainly equal to man's knowledge of himself. No man knows more of his own heart than the Searcher of hearts knows. Up to this point, certainly, the truth of the text is incontrovertible. God knows all that man knows.

II. We come now to the second position: That God accurately and exhaustively knows all that man might, but does not, know of himself.

Although the Creator designed that every man should thoroughly understand his own heart, and gave him the power of self-inspection that he might use it faithfully, and apply it constantly, yet man is extremely ignorant of himself. Mankind, says an old writer, are nowhere less at home, than at home. Very few persons practise serious self-examination at all; and none employ the power of self-inspection with that carefulness and sedulity with which they ought. Hence men generally, and unrenewed men always, are unacquainted with much that goes on within their own minds and hearts. Though it is sin and self-will, though it is thought and feeling and purpose and desire, that is going on and taking place during all these years of religious indifference, yet the agent himself, so far as a sober reflection upon the moral character of the process, and a distinct perception of the dreadful issue of it, are concerned, is much of the time as destitute of self-knowledge as an irrational brute itself. For, were sinful men constantly self-examining, they would be constantly in torment. Men can be happy in sin, only so long as they can sin without thinking of it. The instant they begin to perceive and understand what they are doing, they begin to feel the fang of the worm. If the frivolous wicked world, which now takes so much pleasure in its wickedness, could be forced to do here what it will be forced to do hereafter, namely, to eye its sin while it commits it, to think of what it is doing while it does it, the billows of the lake of fire would roll in upon time, and from gay Paris and luxurious Vienna there would instantaneously ascend the wailing cry of Pandemonium.

But it is not so at present. Men here upon earth are continually thinking sinful thoughts and cherishing sinful feelings, and yet they are not continually in hell. On the contrary, "they are not in trouble as other men are, neither are they plagued like other men. Their eyes stand out with fatness; they have more than heart could wish." This proves that they are self-ignorant; that they know neither their sin nor its bitter end. They sin without the consciousness of sin, and hence are happy in it. Is it not so in our own personal experience? Have there not been in the past ten years of our own mental history long trains of thought,—sinful thought,—and vast processions of feelings and imaginings,—sinful feelings and imaginings,—that have trailed over the spaces of the soul, but which have been as unwatched and unseen by the self-inspecting eye of conscience, as the caravans of the African desert have been, during the same period, by the eye of our sense? We have not felt a pang of guilt every single time that we have thought a wrong thought; yet we should have felt one inevitably, had we scrutinized every such single thought. Our face has not flushed with crimson in every particular instance in which we have exercised a lustful emotion; yet it would have done so had we carefully noted every such emotion. A distinct self-knowledge has by no means run parallel with all our sinful activity; has by no means been co-extensive with it. We perform vastly more than we inspect. We have sinned vastly more than we have been aware of at the time.

Even the Christian, in whom this unreflecting species of life and conduct has given way, somewhat, to a thoughtful and vigilant life, knows and acknowledges that perfection is not yet come. As he casts his eye over even his regenerate and illuminated life, and sees what a small amount of sin has been distinctly detected, keenly felt, and heartily confessed, in comparison with that large amount of sin which he knows he must have committed, during this long period of incessant action of mind, heart, and limbs, he finds no repose for his misgivings with respect to the filial examination and account, except by enveloping himself yet more entirely in the ample folds of his Redeemer's righteousness; except by hiding himself yet more profoundly in the cleft of that Rock of Ages which protects the chief of sinners from the unsufferable splendors and terrors of the Divine glory and holiness as it passes by. Even the Christian knows that he must have committed many sins in thoughtless moments and hours,—many sins of which he was not deliberately thinking at the time of their commission,—and must pray with David, "Cleanse thou me from secret faults." The functions and operations of memory evince that such is the case. Are we not sometimes, in our serious hours when memory is busy, convinced of sins which, at the time of their commission, were wholly unaccompanied with a sense of their sinfulness? The act in this instance was performed blindly, without self-inspection, and therefore without self-conviction. Ten years, we will say, have intervened,—years of new activity, and immensely varied experiences. And now the magic power of recollection sets us back, once more, at that point of responsible action, and bids do what we did not do at the time,—analyze our performance and feel consciously guilty, experience the first sensation of remorse, for what we did ten years ago. Have we not, sometimes, been vividly reminded that upon such an occasion, and at such a time, we were angry, or proud, but at the time when the emotion was swelling our veins were not filled with, that clear and painful sense of its turpitude which now attends the recollection of it? The re-exhibition of an action in memory, as in a mirror, is often accompanied with a distinct apprehension of its moral character that formed no part of the experience of the agent while absorbed in the hot and hasty original action itself. And when we remember how immense are the stores of memory, and what an amount of sin has been committed in hours of thoughtlessness and moral indifference, what prayer is more natural and warm than the supplication: "Search me O God, and try me, and see what evil ways there are within me, and lead me in the way everlasting."

But the careless, unenlightened man, as we have before remarked, leads a life almost entirely destitute of self-inspection, and self-knowledge. He sins constantly. He does only evil, and that continually, as did man before the deluge. For he is constantly acting. A living self-moving soul, like his, cannot cease action if it would. And yet the current is all one way. Day after day sends up its clouds of sensual, worldly, selfish thoughts. Week after week pours onward its stream of low-born, corrupt, unspiritual feelings. Year after year accumulates that hardening mass of carnal-mindedness, and distaste for religion, which is sometimes a more insuperable obstacle to the truth, than positive faults and vices which startle and shock the conscience. And yet the man thinks nothing about all this action of his mind and heart. He does not subject it to any self-inspection. If he should, for but a single hour, be lifted up to the eminence from which all this current of self-will, and moral agency, may be seen and surveyed in its real character and significance, he would start back as if brought to the brink of hell. But he is not thus lifted up. He continues to use and abuse his mental and his moral faculties, but, for most of his probation, with all the blindness and heedlessness of a mere animal instinct.

There is, then, a vast amount of sin committed without self-inspection; and, consequently, without any distinct perception, at the time, that it is sin. The Christian will find himself feeling guilty, for the first time, for a transgression that occurred far back in the past, and will need a fresh application of atoning blood. The sinner will find, at some period or other, that remorse is fastening its tooth in his conscience for a vast amount of sinful thought, feeling, desire, and motive, that took origin in the unembarrassed days of religious thoughtlessness and worldly enjoyment.

For, think you that the insensible sinner is always to be thus insensible,—that this power of self-inspection is eternally to "rust unused?" What a tremendous revelation will one day be made to an unreflecting transgressor, simply because he is a man and not a brute, has lived a human life, and is endowed with the power of self-knowledge, whether he has used it or not! What a terrific vision it will be for him, when the limitless line of his sins which he has not yet distinctly examined, and thought of, and repented of, shall be made to pass in slow procession before that inward eye which he has wickedly kept shut so long! Tell us not of the disclosures that shall be made when the sea shall give up the dead that are in it, and the graves shall open and surrender their dead; what are these material disclosures, when compared with the revelations of self-knowledge! What is all this external display, sombre and terrible as it will be to the outward eye, when compared with all that internal revealing that will be made to a hitherto thoughtless soul, when, of a sudden, in the day of judgment, its deepest caverns shall heave in unison with the material convulsions of the day, and shall send forth to judgment their long slumbering, and hidden iniquity; when the sepulchres of its own memory shall burst open, and give up the sin that has long lain buried there, in needless and guilty forgetfulness, awaiting this second resurrection!

For (to come back to the unfolding of the subject, and the movement of the argument), God perfectly knows all that man might, but does not, know of himself. Though the transgressor is ignorant of much of his sin, because at the time of its commission he sins blindly as well as wilfully, and unreflectingly as well as freely; and though the transgressor has forgotten much of that small amount of sin of which he was conscious, and by which he was pained, at the time of its perpetration; though on the side of man the powers of self-inspection and memory have accomplished so little towards the preservation of man's sin, yet God knows it all, and remembers it all. He compasseth man's path, and his lying-down, and is acquainted with all his ways. "There is nothing covered, therefore, that shall not be revealed, neither hid that shall not be known. Whatsoever ye have spoken in darkness shall be heard in the light; and that which ye have spoken in the ear in closets shall be proclaimed upon the house-tops." The Creator of the human mind has control over its powers of self-inspection, and of memory; and when the proper time comes He will compel these endowments to perform their legitimate functions, and do their appointed work. The torturing self-survey will begin, never more to end. The awful recollection will commence, endlessly to go on.