Some of the heaviest seasons a marriage will ever carry have no villain in them at all. A diagnosis. A miscarriage, or years of longing for a child who hasn't come. An accident. A slow decline that asks one spouse to love someone who can no longer fully recognize being loved. None of these are anyone's failure, and they deserve to be named honestly as exactly that.
Scripture doesn't hide from this
The Bible includes faithful people who suffered profoundly through no fault of their own. Job was described as blameless, and he lost nearly everything. Paul, whose faithfulness is hard to question, carried a "thorn in the flesh" he begged God three times to remove — and wasn't granted removal, only sufficiency.
What this book — and this life — does not promise
It would be dishonest to suggest a strong walk with God guarantees an easy marriage, or that suffering inside a marriage always traces back to someone's sin. Sometimes the honest answer to "what did we do wrong" is nothing. The weight being carried isn't a referendum on anyone's faith. It's the ordinary, painful reality of living in a world still waiting for its full healing.
What's actually needed in seasons like this
A couple facing this kind of suffering doesn't need to be told that more faith would fix it. They need what Job's friends failed to offer for most of his story — presence without easy answers, and permission to grieve honestly before God without that grief being mistaken for unbelief. Christ himself wept at a grave he was about to empty. Grief and faith were never opposites to him.
Where this goes next
Scripture doesn't promise a furnace-free marriage. It promises a Refiner who stays present in the furnace — a smaller promise than most of us would prefer, and, in the end, a truer and deeper one.