2. Secondly, _The subtlety that the Scriptures do attribute to sin, or to the heart, is mostly and chiefly intended to reflect upon Satan, as the author and contriver of these deceits_. In Heb. iii. 13 there is mention of the ‘deceitfulness of sin,’ but it is evident that something else besides sin is intended, to which deceitfulness must be properly ascribed; for sin being, as most conclude, formally a privation, or if we should grant it a positive being, as some contend, yet seeing the highest notion we can arrive at this way, excluding but the figment of Flacius Illyricus, who seems to make original sin indistinct from the very essence of the soul, is but to call it an act.[165] Deceitfulness cannot be properly attributed to it, but with reference to him who orders that act in a way of deceitfulness and delusion; which ultimately will bring it to Satan’s door. If here the deceitfulness of sin be devolved upon the subject, then it runs into the same sense with Jer. xvii. 9, ‘The heart is deceitful above all things.’ But why is the deceitfulness fixed upon the heart? The ground of that we have in the next words; it is deceitful, because it is wicked, ‘desperately wicked.’ But who then inflames and stirs up the heart to this wickedness? Is it not Satan? Who then is the proper author of deceit but he? It is true, indeed, that our hearts are proper fountains of sin, and so may be accused possibly in some cases where Satan cannot be justly blamed; yet if we consider deceitfulness as a companion of every sin, though our hearts be to be blamed for the sin, Satan will be found guilty of the deceitfulness. It may be said a man complies with those things which are intended for his delusion, and so improperly by his negligence may fall under blame of self-deception; but it is unimaginable that he can properly and formally intend to deceive himself. Deceit then, not being from sin nor ourselves properly, can find out no other parent for itself than Satan. Besides this, that these texts upon a rational inquiry do charge Satan with the deceitfulness of sin; they do over and above point at the known and constant way of Satan, working so commonly by delusion, that deceitfulness is a close companion of every sin. The deceitfulness of one sin is as much as the deceitfulness of every sin. Nay, further, that text of Jer. xvii. 9, shews this deceitfulness not to be an ordinary sleight, but the greatest of all deceits above measure, and of an unsearchable depth or mystery; ‘who can know it?’