Just as people intensely disregard the real things that are expected of them, and intensely pursue their own invented beliefs, defining their own way through life, by means of their own wisdom, so too, Isaiah here is inviting everyone to use that same intensity, to obey Gods mandates, and to follow Gods design for the spiritual life.
People say all of the right words, for the public ear, but they do not do the right things. Their words and their actions do not match.
Unbelievers, pursue religions that are totally false. And, they pursue those religions with intense faith and support, and sincerity, and sometimes to the point of fanaticism. And it is all for nothing because it is all false.
Believers in Christ, pursue philosophies and beliefs that are contrary to the teachings that are in the Bible, to the point of even inventing their own standards of right and wrong, even to the point of prejudice or bias against those who don’t abide by their invented standards, which in itself is a contradiction.
And with great intensity, these wrong paths are pursued.
And then of course, there are those who are defiant against truth, and even against religion, as they pursue, no belief philosophies, or criminal activities, or whatever beliefs they have invented for themselves, seeing themselves as rebels, or free spirits, against things that they call, controlling, or the establishment.
But, as we have already seen, there are only two true rulers in existence. One is the sin nature, and the second is truth.
There is no third choice.
And if you reject truth, you are by default, a slave without freedom or rights, to the sin nature.
And oddly enough, by pursuing anything or everything that is against truth, you are not racing to your freedom, but you are racing toward the edge of a cliff, over which there is no return.
If however, with a whole lot less work, by merely engaging in a daily Bible study, and therefore learning and growing up in your spiritual life, you are not subordinating yourself to misery, but in fact are receiving the greatest freedom in free thinking, which is based on true reality, resulting in phenomenal innovation and happiness and fulfillment, not to mention the completion of one’s own meaning and purpose in life.
But then, who wants to be special and complete and fulfilled, when you can do nothing, and be nothing and miserable and empty?