'Within' in the Bible

Then they approached and spoke before the king regarding his injunction, “Have you not signed an injunction that anyone who petitions (prays to) any god or man except you, O king, within the designated thirty days, is to be thrown into the den of lions?” The king answered, “The statement is true, in accordance with the law of the Medes and Persians, which may not be altered or revoked.”

“As for me, Daniel, my spirit was distressed and anxious within me, and the visions [that appeared] in my mind kept alarming (agitating) me.

“Then in his place one (his eldest son, Seleucus IV Philopator) will arise who will send an oppressor through the Jewel of his kingdom; yet within a few days he will be shattered, though not in anger nor in battle.