The guilt of Ephraim is stored up. His sin is stored up.
so now also does Hosea say, that the iniquity of Ephraim was sealed up. For writings may perish, when they spread abroad: but what is laid up and put under a seal always remains. What, then, Hosea now means is, that the people flattered themselves in vain, while a truce was granted them; for the Lord kept their sins under his seal; as though he said “God forgets not your iniquity: as he, however, spares you only for a time, it would be far better to suffer immediate punishment, for thus the memory of your sin would pass away; but he now carefully keeps all your iniquities as it were under seal, and your sins are laid up in store.” 