He says, first, that sealed is the iniquity of Ephraim, and that hidden is his sin; by which words he means, that hypocrites in vain flatter themselves while God suspends his vengeance; for though he may connive for a time, yet he does not sleep; nor ought it to be believed that he is blind, but he seals up the sins of men, and keeps them inclosed until the proper time for revealing them shall come. This is the chief point; but the Prophet has expressed something more. For as Jeremiah says,
‘The sin of Judah is written with a pen of iron, with the point of a diamond,’ (Jeremiah 17:1;)
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.”
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.