Thomas Aquinas Commentary Jeremiah 36:1-4

"And it came to pass in the fourth year of Jehoiakim the son of Josiah, king of Judah, that this word came unto Jeremiah from Jehovah, saying, Take thee a roll of a book, and write therein all the words that I have spoken unto thee against Israel, and against Judah, and against all the nations, from the day I spake unto thee, from the days of Josiah, even unto this day. It may be that the house of Judah will hear all the evil which I purpose to do unto them; that they may return every man from his evil way; that I may forgive their iniquity and their sin. Then Jeremiah called Baruch the son of Neriah; and Baruch wrote from the mouth of Jeremiah all the words of Jehovah, which he had spoken unto him, upon a roll of a book." — Jeremiah 36:1-4 (ASV)

1. The description of the writing is given first.
2. Second is the destruction of the writing, at now the king was sitting in the winter-house (Jeremiah 36:22).
3. Third is its restoration, at and the word of the Lord came to Jeremiah (Jeremiah 36:27).

Concerning the first point, there are three parts:

1. He gives the command to write: take the scroll. Write the vision and make it plain upon tablets, that he who reads it may run over it (Habakkuk 2:2).
2. He gives the fruit of the writing: for perhaps when the house of Judah. If the wicked man repents from all his sins which he has done, and shall keep all my commandments, and execute judgment and justice, he shall surely live, and not die (Ezekiel 33:19).
3. The minister of the writing: Jeremiah, therefore, called Baruch. Write what you see in a book, and send it to the seven churches which are in Asia (Revelation 1:11).