Job 28:12 - Albert Barnes' Notes on the Bible

But where shall wisdom be found? - That is, the full understanding of the plans of God - for this is the point of inquiry. The object of Job is to show that it is not to be found in the most profound science; by penetrating to the farthest extent of which man was capable in the earth, nor by any human investigations whatever. None of these things revealed the great plans of the Almighty in reference to his moral government, and particularly to the points which engrossed the attention of Job and his friends. Where true wisdom is to be found he proceeds to state in the subsequent verses.