Proverbs 27:1 Boast not thyself of to morrow; for thou knowest not what a day may bring forth.
2 Corinthians 6:2 Behold, now is the accepted time; behold, now is the day of salvation.
Ecclesiastes 9:10 Whatsoever thy hand findeth to do, do it with thy might; for there is no work, nor device, nor knowledge, nor wisdom, in the grave, whither thou goest.
James 4:14 Whereas ye know not what shall be on the morrow. For what is your life? It is even a vapour, that appeareth for a little time, and then vanisheth away.