Jeremiah 36:6

Go thou, then, he says, and read in the volume The Prophet, in this case, was ready to incur any odium which might be, for he did not bid Baruch to relate by memory what he had heard from him, but ordered him to take the volume, and to read, as we shall hereafter see, what he had written. The Prophet then did not, in this instance, avoid danger, and put Baruch in his own place, but he expressly told him to read from the volume: What thou hast written, he says,from my mouth, and, what Jehovah has spoken, these things read thou to the people in the Temple, on a fasting day This day was chosen, first, because there was then a greater concourse of people, according to what immediately follows, for he was to read these things in the ears not only of the citizens, but also of the whole people; and on fast-days they were wont, as it is well known, to come in great numbers to the city for the purpose of sacrificing. It was then God’s purpose that these threatenings should be proclaimed, not only to the inhabitants of Jerusalem, but also to all other Jews, that the report of them might spread to every part of the land. In the second place, such a day was much more suitable to the message conveyed; for why was a fast enjoined, except humbly to supplicate God’s mercy, and to deprecate his wrath? As then this was the design of a fast, the Jews ought to have been then, as it were, in a submissive state of mind, prepared calmly to receive these threatenings, and to profit by them.

We then see that there were two reasons why the Prophet, by God’s command, fixed on this day, — first, because there was a larger number of people, — and, secondly, because a fast ought to have rendered them teachable, so that they might more readily submit to God, acknowledge their sins, and, being terrified, might also flee to God’s mercy, and thus loathe themselves on account of their sins. The rest tomorrow.