The guilt of Ephraim is stored up. His sin is stored up.
We now see that what the Prophet means in this verse is, that the Israelites had made such advances in their sins, that now no pardon or remission could be hoped for. “God then shall never be propitious to you, for your sin is sealed up.” And this sentence applies to all those who disguise themselves before God, when he does not severely treat them, but, on the contrary, kindly sustains and bears with them. Since, then, they thus disappointed his forbearance, it was necessary that this should befall them, that he should seal up their iniquities, and keep inclosed their sins. 