John 6:27-29 ... Labour not 
for the meat which perisheth, but for that meat which endureth unto 
everlasting life, which the Son of man shall give unto you: for him hath
 God the Father sealed. 28 Then said they unto him, What shall we do, 
that we might work the works of God? 29 Jesus answered and said unto 
them, This is the work of God, that ye believe on him whom he hath sent.
John 8:12 ... Then spake Jesus again unto 
them, saying, I am the light of the world: he that followeth me shall 
not walk in darkness, but shall have the light of life.
Proverbs 27:1 ... Boast not thyself of to morrow; for thou knowest not what a day may bring forth.
  
James 4:13-17 ... Go to now, ye that say, To day or to morrow we will go
 into such a city, and continue there a year, and buy and sell, and get 
gain: 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. 15 For that ye ought to say, If the Lord will, we 
shall live, and do this, or that. 16 But now ye rejoice in your 
boastings: all such rejoicing is evil. 17 Therefore to him that knoweth 
to do good, and doeth it not, to him it is sin.