It's irrational how some approach God. Easy enough today to mock at the idol makers as Isaiah does later in chapters 40-44 making a god from wood or clay. But even today among the "wise" of this age God is treated as if composed of wood or clay, who claim that God is simply a human construct. Or what of those who believe in God, but reckon Him stupid or evil in His ways. In this high tech age of computers and post-modernistic philosophy, some are under the misconception that the created thing can be superior to the creator. Such can also be inferred from their naturalistic theory of evolution in which entirely apart from a creator mere chance brought about transitions from lower life forms to higher life forms, some reckon that human society has evolved past a need for God.

Now granted that Isaiah is not saying that we are merely mindless pieces of clay, as some theologians would have it. For implied throughout Isaiah is the free will to sin and repent. But to mock the One who made our form is to mock ourselves. The god of many today really does know nothing. For they worship were fate, luck or chance and as such reckon themselves and their values meaningless in an absolute sense. And  "furthermore, since they did not think it worthwhile to retain the knowledge of God, he gave them over to a depraved mind, to do what ought not to be done."Rom 1:28