If morality is relative then by what standard can we say society is or is not making progress?
Saying that right and wrong are social constructs implies that actions aren’t intrinsically right or wrong. In other words, if human opinion is the essence of morality then we can’t say something is inherently wrong regardless of what some people might think.
That’s a common criticism of moral relativism. But taking this a step farther one can argue that the idea of progress makes no sense because progress implies an external standard along which a person or a society can move from a lower to a higher state. Sure, you can make progress toward your personal goals. But your goals are not universal. Other people or cultures might think your values are wrong.
Of course, this doesn’t mean that anything is permissible under relativism. Every culture and every person (except maybe psychopaths) believes certain things are wrong. So it does not follow that behaviorally secular relativists must be less moral than religious people. After all, Islamists believe Allah wants them to blow people up. On the other hand, there’s no basis for a relativist to claim that their moral beliefs should be considered universal.
But if we do believe certain things are right or wrong no matter what anyone thinks—and most of us do believe this—then we’re implying that morality is objective. If morality is objective, however, then how do we distinguish what really is right or wrong from people’s misconceptions?
This is often solved with an appeal to religion. God establishes right and wrong. And the Bible explains it all. Or the Koran. Or another scripture. It depends on your opinion about which scripture is the true Word of God, and how to interpret that scripture. So we’re stuck in a cycle of opinion.
Scriptures have others problems as well. Should gays and never married women who are not virgins be executed? The Bible says yes (Leviticus 20:13 and Deuteronomy 22:20-21).
Despite apologetics that try to explain it away, it’s hard to honestly say that a perfectly good deity would command such a thing. Further, if humanity has morally progressed beyond such barbarism then humans have morally surpassed the biblical God. This implies that if morality is objective then God didn’t create it.
But could the laws of morality, like scientific claims about the laws of nature, have emerged spontaneously without a divine creator? The problem is that morality necessarily entails conscious intentions, so how does one construct a convincing argument that the laws of conscious intentions emerged by chance with no consciousness or intentionality behind them?
I don’t have perfect answers to these questions. One challenge of being human is that we’re smart enough to ask questions that we’re not smart enough to answer. But I can reach a few tentative conclusions.
A non-theist must accept the implications of relativism or develop a more compelling answer to these questions. But if God exists, and if God is the source of morality, then it seems to me that the best we can do is strive to understand morality while acknowledging that our perceptions are deeply flawed, and that we are easily led astray. And religion, rather than being a corrective, has long been a great catalyst for leading us astray. Scriptures, then, are human attempts to understand God, not the inerrant revelation of God.
We should trust no one who claims to know God’s will. And one should distrust one’s own beliefs about God’s will most of all—the temptation for self-justification is too great. This means that morality is primarily about rigorous self-criticism, which includes the realization that pointing a finger at others is usually just an avoidance tactic.