This is not the wisdom that comes down from above, but is earthly, unspiritual, demonic.
15 This wisdom descendeth not. As hypocrites with difficulty give way, he sharply checked their haughtiness, denying that to be true wisdom with which they were inflated, while they were extremely morose in searching out the vices of others. Conceding to them, however, the term wisdom, he shews by the words he applies to it its true character, and says that it is earthly, sensual...
As the sins before condemned arise from an affectation of being thought more wise than others, and being endued with more knowledge than they, so the apostle in these verses shows the difference between men's pretending to be wise and their being really so, and between the wisdom which is from beneath (from earth or hell) and that which is from above. I.
Commenting on James 3:13-18
This wisdom descendeth not from above,.... If it must be called wisdom, as it ought not; an envious, quarrelsome, and contentious spirit, does not deserve such a name; yet if any will call it so, or can think that a man of such a disposition is a man possessed of wisdom; it is such wisdom as does not come from above, from heaven, from the...