Daniel 8:26-27 New American Standard Bible (NASB)

26. "The vision of the evenings and mornings Which has been told is true; But keep the vision secret, For it pertains to many days in the future."

27. Then I, Daniel, was exhausted and sick for days. Then I got up again and carried on the king's business; but I was astounded at the vision, and there was none to explain it.

Daniel 8