Boast not thyself of tomorrow; for thou knowest not what a day may bring forth. (Prov. 27:1 )
Behold, now is the accepted time; behold, now is the day of salvation. (2 Cor. 6:2 ) Yet a little while is the light with you. Walk while ye have the light, lest darkness come upon you: for he that walketh in darkness knoweth not whither he goeth. While ye have light, believe in the light, that ye may be the children of light. (John 12:35, 36 )
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. (Eccl. 9:10 )
Soul, thou hast much goods laid up for many years; take thine ease, eat, drink, and be merry … Thou fool, this night thy soul shall be required of thee: then whose shall those things be, which thou hast provided? So is he that layeth up treasure for himself, and is not rich toward God. (Luke 12:19-21 )
What is your life? It is even a vapour, that appeareth for a little time, and then vanisheth away. (Jas. 4:14 ) The world passeth away, and the lust thereof: but he that doeth the will of God abideth for ever. (1 John 2:17 )