The scroll might have been drawn up by Baruch from memoranda of his own without the prophet's direct authority. The princes therefore did not ask from curiosity, but to obtain necessary information.

How didst thou write all these words? - At his mouth? - So the text should be pointed. They wished to know whether he had not copied them, or whether he wrote as Jeremiah prophesied.

And they asked Baruch,.... The following question, which may seem at first sight an odd, needless, and trifling one, as some have called it:

saying, tell us now, how didst thou write all these words at his mouth? this question does not regard the manner of writing them, whether with ink or not, for that they could see with their eyes, and yet Baruch's answer seems to have respect to this, as if he so understood them; nor barely the matter of them, as whether it was the substance of what was contained in the roll that Jeremiah dictated, and that only, leaving it to Baruch to use what words he would, or whether the express words were dictated by him; but rather it seems to have regard to the possibility of doing it: by the question it appears, that Baruch had told the princes that the prophet had dictated all these things to him, and he had taken them down in writing from his mouth; now they wanted more satisfaction about the truth of this matter. It was a difficulty with them how it was possible for Jeremiah to recollect so many different discourses and prophecies, delivered at different times, and some many years ago, and so readily dictate them to Baruch, as fast as he could write them; wherefore they desire he would tell them plainly and faithfully the truth of the matter, how it was, that so they might, if they could, affirm it with certainty to the king; since, if this was really fact which he had related, these prophecies originally, and the fresh dictating of them, must be from the Spirit of God, and would certainly have their accomplishment.

Meanwhile, in order to inform themselves more exactly regarding what had happened, they ask Baruch, "Tell us, how hast thou written all these words at his mouth?" Thereupon Baruch replied, "He used to call aloud these words to me," i.e., he used to dictate them to me by word of mouth, "and I wrote them in the book with ink." The imperfect expresses the repeated or continued doing of anything; hence יקרא here means to dictate, which requires considerable time. In the following circumstantial clause is found the participle ואני כתב, while I was writing; and so I myself was doing nothing else all the time than writing down what was dictated. Some commentators have found a stumbling-block in מפּיו in the question of the princes (Jeremiah 36:17); the lxx and Ewald omit this word, inasmuch as Baruch does not explain till afterwards that he had written down the words from the mouth of Jeremiah. Others, like Venema, take מפּיו as a question equals המפּיו. Both explanations are arbitrary and unnecessary. The princes knew quite well that the substance of the book was from the mouth of Jeremiah, i.e., contained his addresses; but Baruch, too, might have composed the book from the oral discourses of the prophet without being commissioned by him, without his knowledge also, and against his will. Accordingly, to attain certainty as to the share of the prophet in this matter, they ask him, and Baruch answers that Jeremiah had dictated it to him.

And they asked Baruch, saying, Tell us now, How didst thou write all these words at his mouth?

17. What they wished to know was, whether what Baruch had read to them was written by him from memory after hearing Jeremiah repeating his prophecies continuously, or accurately from the prophet's own dictation.

36:9-19 Shows of piety and devotion may be found even among those, who, though they keep up forms of godliness, are strangers and enemies to the power of it. The princes patiently attended the reading of the whole book. They were in great fear. But even those who are convinced to the truth and importance of what they hear, and are disposed to favour those who preach it, often have difficulties and reserves about their safety, interest, or preferment, so that they do not act according to their convictions, and try to get rid of what they find troublesome.