'Cause' in the Bible

So then, some were shouting one thing and some another, for the assembly was in confusion and the majority did not know for what reason they had come together.

For indeed we are in danger of being accused of a riot in connection with today’s events, since there is no real cause for it, and in this connection we will be unable to account for this disorderly gathering.”

But on the night immediately following, the Lord stood at his side and said, “Take courage; for as you have solemnly witnessed to My cause at Jerusalem, so you must witness at Rome also.”