How do we identify false prophets? Possible Duplicate:
  How to test the spirits and identify false preachers  




one of the gifts of Holy Spirit is the gift to receive Prophecys. (1 Corinthians 12)

Jesus also warns us in Matthew 24:24

For false Christs and false prophets will appear and perform great signs 
and miracles to deceive even the elect -  if that were possible.


So I am wondering, how can we know that someone is a prophet of Jesus?
Jesus speaks of false prophets elsewhere, and lays out the appropriate test:


  Matthew 7:15-20
  
  15 Beware of false prophets, which come to you in sheep's clothing,
  but inwardly they are ravening wolves.
  
  16 Ye shall know them by their fruits. Do men gather grapes of thorns,
  or figs of thistles?
  
  17 Even so every good tree bringeth forth good fruit; but a corrupt
  tree bringeth forth evil fruit.
  
  18 A good tree cannot bring forth evil fruit, neither can a corrupt
  tree bring forth good fruit.
  
  19 Every tree that bringeth not forth good fruit is hewn down, and
  cast into the fire.
  
  20 Wherefore by their fruits ye shall know them.


A false prophet, therefore, is someone who claims to be a prophet, but whose works are evil, whereas a true prophet will bring forth good fruit, and his works will be edifying and uplifting of those around him, as per the teachings of Jesus and the principles of the Gospel.