'Uncertainty' in the Bible

Peter however, together with the Eleven, stood up and addressed them in a loud voice. "Men of Judaea, and all you inhabitants of Jerusalem," he said, "be in no uncertainty about this matter but pay attention to what I say.

For this reason I also, when I could no longer endure the uncertainty, sent to know the condition of your faith, lest perchance the Tempter might have tempted you and our labour have been lost.

Instruct those who are rich in the present age not to be arrogant or to set their hope on the uncertainty of wealth, but on God, who richly provides us with all things to enjoy.