A central principle of morality is often stated as: "Ought implies can." This means that if you're morally obligated to do something, it must be something you're actually capable of doing.
But when we strip away unjustified moral authorities — divine command, tradition, intuition, and social consensus — we often find that we cannot identify a purely moral "ought" that stands on its own. What we're left with are two forms of reasoning that guide behavior:
Prudential oughts – what you ought to do to achieve some goal or avoid harm (e.g. “You ought to rest if you’re sick”).
Probabilistic oughts – what you ought to expect or prepare for, based on likelihoods (e.g. “It will probably rain; you ought to bring an umbrella”).
If morality demands only what is possible, and the only "oughts" we can clearly justify are prudential or probabilistic, then morality—at least in practical terms—collapses into or is reducible to those forms of reasoning. That is, when we say “you morally ought to help someone,” what we may really be expressing is a prudential calculation (e.g. to maintain social trust, inner coherence, or well-being) or a probabilistic judgment (e.g. helping has the highest chance of reducing harm).
This doesn’t trivialize morality. Rather, it grounds it in what we can actually reason about and act on, without appealing to unverifiable metaphysics or vague intuitions. If all that remains after eliminating confused or circular appeals to authority are the forms of reasoning we already rely on to live practically and responsibly, then morality simply becomes a special application of practical reasoning under constraints of harm, fairness, and consequences.
This is consistent with “ought implies can,” and suggests that when the moral "ought" has no independent foundation, it is not destroyed—it is clarified. It becomes part of the very reasoning we use every day when trying to act wisely, justly, and humanely.
If morality starts with “ought implies can”, then no moral obligation is valid unless it’s actually possible for us to follow.
That makes human capacity and reason the gatekeepers of all moral claims.
Principles like “serve others or God” become derived or contextual rather than foundational.
So when religion says, “You ought to put God first” — above yourself, above everything — it violates that standard. Because it demands obedience to a being or will that is often unknowable, unverifiable, or impossible to follow.
In a morality grounded in practical reason, no command supersedes our ability to
understand and act.
That means:
God can’t come first. Human capacity does.