Desperately wicked.--Rather, incurably diseased, as in Jeremiah 15:18; Jeremiah 30:12; Jeremiah 30:15; Isaiah 17:11, and elsewhere. Wickedness is, of course, implied, but it is regarded rather as a moral taint following on the deliberate choice, than as the choice itself.
who can know it? angels do not, Satan cannot; only the spirit of a man can know the things of a man within him; though the natural man does not know the plague of his own heart; the Pharisee and perfectionist do not, or they would not say they were without sin; such rant arises from the ignorance of their own hearts; only a spiritual man knows his own heart, the plague of it, the deceitfulness and wickedness in it; and he does not know it all; God only knows it fully, as is expressed in the next words, which are an answer to the question; see 1 Corinthians 2:11.
(q) "de omnibus", vid. Noldium, p. 548. (r) "et immedicabili malo affectum", Gussetius; "incurabiliter aegrum", Cocceius.