Thought from Today's Old Testament Passage:
[Daniel 2:25-30] This was the image of a man erect: It stood before him, as a living man; and, because those monarchies which were designed to be represented by it were admirable in the eyes of their friends, the brightness of this image was excellent; and because they were formidable to their enemies, and dreaded by all about them, the form of this image is said to be terrible; both the features of the face and the postures of the body made it so. But that which was most remarkable in this image was the different metals of which it was composed—the head of gold (the richest and most durable metal), the breast and arms of silver (the next to it in worth), the belly and sides (or thighs) of brass, the legs of iron (still baser metals), and lastly the feet part of iron and part of clay. See what the things of this world are; the further we go in them the less valuable they appear. In the life of a man youth is a head of gold, but it grows less and less worthy of our esteem; and old age is half clay; a man is then as good as dead. It is so with the world; later ages degenerate. The first age of the Christian church, of the reformation, was a head of gold; but we live in an age that is iron and clay. Some allude to this in the description of a hypocrite, whose practice is not agreeable to his knowledge. He has a head of gold, but feet of iron and clay: he knows his duty, but does it not.
Matthew Henry, Matthew Henry's Commentary on the Bible (Peabody, MA: Hendrickson Publishers) 1997.