This has been the source of much derision for the believer, however I think it is this critical period that humanity was getting its first taste of the absolute nature of God's Holiness. The human race was simply not ready yet to grasp a greater concept of God's goodness beyond strict adherence to moral law, and without first appreciating the crushing weight of damage sin can bring.
One only need to observe the concept of Freedom to understand this. No other nation in the world prides itself on the notions of freedom, but as mentioned before, with freedom comes great responsibility. Freedom in its genuine expression does not grant us license to exercise full autonomy from moral restraint simply for "freedom's" sake. This sort of “freedom” becomes an illusion and merely engenders a tyranny by imprisonment of the conscience.
But why the harshness? Allow me to offer another illustration from past experience. I am currently serving as U.S. servicemember overseas. During my time in basic training, I was made to perform mundane yet stringently regulated tasks to complete perfection. Mediocrity often brought severe consequences, and the punishment never fit the crime. Folding towels in sharp angles... arranging socks in meticulous patterns...creasing underwear into perfect squares... Many questioned what possible use would any of this serve in the field!!
May I make a suggestion? Severity is often warranted when lives are at stake. Within the military, we well understand that a failure to follow instructions can lead to deadly consequences, and though at times our orders will make little sense to us, our limited perspective precludes our seeing the broader picture. In this light, it didn't matter that I had less than five hours' sleep in one week, or how many pushups I was made to do, how many miles I was made to run... it didn't matter that I wouldn't always understand why I would be made to perform seemingly menial tasks. Similarly, when eternity is at stake, God was willing to take the long route so that we would see from History the full meaning of His ultimate plan --to have a relationship with his creation-- and the inescapable consequences of deviating from that plan.
We see this same scenario played through the biblical history of humanity. Yet, they were failing miserably at adhering to the law faithfully. Contrary to what you've suggessted, we cannot acheive goodness simply by following his commands. The apostle Paul wrote of the Law in grave terms. It condemns us. No matter how much one tried, he could never achieve the perfection Holiness demanded. It has been said that the Law is like a mirror. It reveals to us that we're dirty, but we do not rub our face on the mirror to clean it! Thankfully, humanity was not left to languish in their failures alone. For the law served simply to indicate that there IS a moral law, and that we are powerless to keep it entirely. Mankind was about to learn that the guiding principle behind God's goodness is Love itself.
Now was the time to reveal not just the requirement of "holiness", but the intent of it. God's "goodness" was about to be revealed in a very understandable measure by His example, but it wasn't until at that point in time that mankind had developed the capacity to understand the gravity of what was about to take place. Without the historical understanding of sin and its consequences through the ages, Jesus’ sacrifice would have been seen as without value and meaningless. As mentioned before, The qualities and actions of what is good would now be most vividly demonstrated in the life and teaching of Jesus as he layed out by speech and example how one can identify with the true intent of goodness. As a result of God’s interaction with humanity, we have an observable example of what Characterizes "good" and its effects. For three years, he taught his disciples precious illuminations to their history and revealed a grander purpose in life than one of strict obedience. He set the moral standard on a higher plane, driving ethics from the highest motive - love itself. Ever since period, mankind never had a better demonstration of what "goodness" is.
To the church’s critics I would suggest they get their eyes off the shortcomings of institutions and people and history's dark spots. Level your scrutiny at the person of Christ, and you will see the One who demonstrates goodness very well. Pilate said of Him, "I find no fault in this man," The thief on the cross said, "We receive the due reward of our deeds, but this man has done nothing wrong." Jesus looked at His fiercest opponents and said, “Which one of you convinces me of any sin?" That last challenge could not have been made by any other religious leader, founder, or prophet. The sinfulness of each one of them is readily visible and undeniable. Jesus alone stands without moral blemish.
One final note and I'll close... Are there any indications that such "goodness" is even cross-culturally recognizable? What about people from other religions and systems of thought? It is so fascinating when you walk into Mahatma Gandhi’s home in Central India today... you'll see a huge absolutely stunning banner. On it is a quote by noted atheist Bertrand Russell:
So those are the words of an atheist, referring to a pantheist, who appealed to a theist. Christ offers humanity an accounting for the highest pattern of virtue to be emulated by all who want to align themselves with what is good. "God is good" is often the simplest means of conveying volumes of teaching, for it's not merely a hollow descriptive statement, but a statement of metaphysical essence and substance. Therefore, because God literally IS good, good necessarily exists eternally. As a result, good existed even when there was no universe in existence."It is doubtful that the Mahatma's efforts would have succeeded, except he was appealing to the conscience of a Christianized people."
[Added Question Below]
Corvus, I fully understand that we have a life beyond this message board, and that anyone else is welcome to offer a response as they desire. However, this writing has been outlined on the basis of our discussion hitherto. The question I want to ask then is does anyone have any disagreements on this issue they wish to bring forward?