What does Jeremiah 36:13 mean?

Then Baruch read the words of Jeremiah from the book in Yahweh’s house, in the room of Gemariah the son of Shaphan, the scribe, in the upper court, at the entry of the new gate of Yahweh’s house, in the ears of all the people.

When Micaiah the son of Gemariah, the son of Shaphan, had heard out of the book all Yahweh’s words,

he went down into the king’s house, into the scribe’s room: and behold, all the princes were sitting there, Elishama the scribe, Delaiah the son of Shemaiah, Elnathan the son of Achbor, Gemariah the son of Shaphan, Zedekiah the son of Hananiah, and all the princes.

Therefore all the princes sent Jehudi the son of Nethaniah, the son of Shelemiah, the son of Cushi, to Baruch, saying, “Take in your hand the scroll in which you have read in the ears of the people, and come.” So Baruch the son of Neriah took the scroll in his hand, and came to them.

They said to him, “Sit down now, and read it in our hearing.” So Baruch read it in their hearing.

Now when they had heard all the words, they turned in fear one toward another, and said to Baruch, “We will surely tell the king of all these words.”