Jeremiah 17:9

The Father, now that he has made him a little lower than the angels, will crown him with glory and honor and will put all things beneath his feet. Then those who pierced him will know who he is and will strike their breasts, tribe to tribe—because in fact they formerly failed to recognize him in the humility of human condition. "And he is man," says Jeremiah, "and who shall know him?" Because also, Isaiah says, "His nativity, who shall tell of it?"

(Verse 9, 10.) The heart of all is perverse and inscrutable, who can understand it? I am the Lord, searching the heart and testing the kidneys, who gives to each according to their ways and according to the fruit of their inventions. LXX: The heart is deep above all, and man is, who can know him? and so on. The Hebrew word Enos is written with four letters, Aleph and Nun and Vau and Sin. Therefore, if Enos is read, it means 'man', but if Anus, it is inscrutable or desperate, because no human heart can find it. But Symmachus interpreted this passage as follows: Inscrutable is the heart of all: but who is the man that can find it? Some of ours, indeed, with good intentions, but not according to knowledge, use this passage against the Jews, because He is called Lord and Savior, according to the dispensation of the assumed flesh, and no one can know the mystery of His birth, according to what is written: Who shall declare His generation? (Isaiah 53:8) Unless God alone who searches the depths and renders to each according to his works. However, it is better that we simply accept that no one knows the secrets of our thoughts except God alone. For as it was said above: Cursed is the man who has hope in man. And conversely: Blessed is the man who trusts in the Lord. Hence, in order for us not to think that the judgment of men is certain, it was introduced that the hearts of almost all are perverse, as the Psalmist says: Cleanse me from my hidden faults, and spare your servant from the faults of others (Psal. 19:13): undoubtedly referring to thoughts. And in Genesis: But God, seeing that the wickedness of men was great on the earth, and that every thought and intent of the heart was inclined towards evil at all times (Gen. 6:5). And again: For the sense and thought of the human heart are prone to evil from their youth (Gen. 8:21). […]

Symmacus translates this passage thus: "The heart of everyone is inscrutable. Yet, who is the man who can find it?" It is customary by our own good wish, therefore, but not according to objective knowledge, to use this passage to argue against the Jews that the man in question is the Lord and Savior, according to the dispensation of the assumed flesh, and that no one shall be able to know the mystery of his nativity, according to what is written: "Who will explain his generation?" except God alone, who probes the secrets and returns to each one according to his works. But it is better that we simply accept that no one knows the secrets of another's thoughts except God alone, for it says above, "Accursed is the person who trusts in humankind" and, "Blessed is the one who trusts in the Lord." Hence, lest we think ourselves to be sure of human judgment, the psalmist implies that almost every heart is perverse, saying, "Cleanse me from hidden thoughts, O Lord, and spare your servant from foreigners," without doubt meaning foreign thoughts. Also in Genesis, it is written, "God saw how great human malice was on the earth and that every thought of the human heart was intent on evil continuously";8 and again, "The senses and the thoughts of a person's heart are prone to evil from his adolescence." Through these texts, we learn that God alone knows a person's thoughts. Yet, if it is said of the Savior that "Jesus saw what they were thinking," and if no one is able to see one's thoughts except God alone, then Christ is God, "who examines hearts and probes the mind and gives to each one according to his works."

David also said in the forty-fourth psalm, "Your throne, O God, is forever and ever. The scepter of your kingdom is a scepter of uprightness. You have loved righteousness. You have hated wickedness. Therefore God, your God, has anointed you with the oil of gladness." By this word he also shows his name, since (as I have shown above) he has called Christ from his anointing. Then, that he was also man, Jeremiah teaches, saying, "And he is a man, and who shall know him?" Also Isaiah: "And God shall send to them a man who shall save them, shall save them by judging."

It is folly to trust in man, for he is not only frail, but false and deceitful. We are apt to think that we trust in God, and are entitled to the blessings here promised to those who do so.

The heart is deceitful above all things,....

The heart is deceitful - עקב הלב akob halleb, “the heart is supplanting - tortuous - full of windings - insidious;” lying ever at the catch; striving to avail itself of every favorable circumstance to gratify its propensities to pride, ambition, evil desire, and corruption of all kinds. And desperately wicked - ואנש הוא veanush hu, and is wretched, or feeble; distressed beyond all things, in consequence of the wickedness that is in it. I am quite of Mr. Parkhurst’s opinion, that this word is here badly translated as אנש anash is never used in Scripture to denote wickedness of any kind. My old MS. Bible translates thus: - Schrewid is the herte of a man: and unserchable: who schal knowen it? Who can know it? - It even hides itself from itself; so that its owner does not know it. A corrupt heart is the worst enemy the fallen creature can have; it is full of evil devices, - of deceit, of folly, and abomination, and its owner knows not what is in him till it boils over, and is often past remedy before the evil is perceived. Therefore trust not in man whose purposes are continually changing, and who is actuated only by motives of self-interest.

Torture is not a relic of barbarism at all. In actuality it is simply a relic of sin; but in comparative history it may well be called a relic of civilisation. It has always been most artistic and elaborate when everything else was most artistic …

In his new Utopia he says, for instance, that a chief point of the Utopia will be a disbelief in original sin. If he had begun with the human soul—that is, if he had begun on himself—he would have found original sin almost the first …