The heart is deceitful above all things and beyond cure. Who can understand it?
What is taught here depends on what is gone before; and therefore they ought to be read together. Many lay hold on these words and mutilate them without understanding the design of the Prophet. This is very absurd: for we ought first to see what the prophets had in view, and by what necessity or cause they were led to speak, what was their condition...
It is excellent doctrine that is preached in these verses, and of general concern and use to us all, and it does not appear to have any particular reference to the present state of Judah and Jerusalem. The prophet's sermons were not all prophetical, but some of them practical; yet this discourse, which probably we have here only the heads of, would be of singular...
Commenting on Jeremiah 17:5-11
The heart is deceitful above all things,.... This is the source of the idolatry and creature confidence of the Jews, sins which were the cause of their ruin; and though what is here said is particularly applicable to their hearts, yet is in general true of the heart of every man; which is "deceitful", and deceiving; and puts a cheat upon the man himself whose...