The morals embodied in the Old Testament are the dicta of relatively brutal, cruel, patriarchal, authoritarian men of antiquity that established the institution of the priesthood to indoctrinate, terrorize, control and exploit other men. Rational ethics - meaning secular ethics - has been carving away at all of that ever since.Besides, didn't all morality originate from religion in the first place??
Our moral system is evolving, which is why the Old Testament god - the bellicose monster Jehovah - morphed into the New Testament god, the gentle Jesus, complete with a whole new and improved set of laws, including the Golden Rule.
We've made a lot of updates since Jesus time, and now consider much of his moral character inadequate. Nevertheless, Christians making the moral argument for god still talk about the existence of an absolute, objective morality, and that they have access to it. Go figure.
The latest version of ethics does away with the god altogether, and is embodied in the Affirmations of Humanism.
Christians are still busily assimilating secularists values, but always a few steps behind those that have left religion, and never acknowledging the secularist contribution to their belief set.
Instead, they continue to give all the credit to some allegedly perfect and timeless god which is obviously evolving as well.
But how would people ever reject stoning children to death once established into law and tradition, and sanctified by the imprimatur of a god, if not from men that simply rejected the ideas anyway? Jehovah never recanted it, did he? It was a freethinker that simply said "Nonsense," and most of the West eventually agreed.
Later, secularists told them to stop burning people, and later still, that it was wrong to own people as slaves or beat them if you did. The Christians seem to have assimilated all of that, although clearly none of it came from their bible.
Nevertheless, they still somehow credit the god and remain oblivious to the value of rational, compassionate ethics, and the part that it has played in reshaped their thinking.
Did you also fail to note that their bible is not their only source of ethics any more? Your comment implies that you did. Are you also a Christian?
So what standard are Christians using when cherry picking which of their 613 Commandments to ignore? Secularist values, of course. What else is there? Islam?
And today, we are teaching the Christian world even more moral refinements, such as that gay and atheist people are not immoral, that women are not subordinate to men, that a liberal education and critical thinking are better than authoritarian indoctrination and magical thinking, and that a stem cell is not a citizen.
We'll all be better off when the church shrinks enough to have its values supplanted by secularist ethics. We need the church out of the people shaping business. It does a poor job, and presently, it's simply in the way.