2 Esdras 14:42-48

42 And the Most High gave understanding to the five men, and by turns they wrote what was dictated, in characters which they did not know. They sat forty days, and wrote during the daytime, and ate their bread at night.
43 As for me, I spoke in the daytime and was not silent at night.
44 So during the forty days ninety-four books were written.
45 And when the forty days were ended, the Most High spoke to me, saying, "Make public the twenty-four books that you wrote first and let the worthy and the unworthy read them;
46 but keep the seventy that were written last, in order to give them to the wise among your people.
47 For in them is the spring of understanding, the fountain of wisdom, and the river of knowledge."
48 And I did so.
Revised Standard Version of the Bible, copyright 1952 [2nd edition, 1971] by the Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.