'Period' in the Bible

Then at the end of the training period that the king had established, the chief officer brought them in before Nebuchadnezzar.

"When that period of time was over, I, Nebuchadnezzar, lifted my eyes to heaven and my sanity returned to me. I blessed the Most High, praising and honoring the one who lives forever: For his sovereignty is eternal, and his kingdom continues from generation to generation.

Now as to the other animals, their authority was removed, but they were granted a reprieve from execution for an appointed period of time."

"Pay attention! I'm going to brief you about what will happen at the end of the period of wrath, because its end is appointed. The ram that you saw with a pair of horns are the kings of Media and Persia.

His successor will send out a tax collector for royal splendor, but in a short period of time he'll be shattered, though neither in anger nor in battle.'"