Bible Verses About Natural Life: Uncertain

Come now, ye that say, To-day or to-morrow we will go into this city, and spend a year there, and trade, and get gain:

whereas ye know not what shall be on the morrow. What is your life? For ye are a vapor that appeareth for a little time, and then vanisheth away.

For that ye ought to say, If the Lord will, we shall both live, and do this or that.