A Prophet
is,

One who tells future events.
"In Scripture, a person illuminated, inspired, or instructed by God to
announce future events;
as Moses, Elijah, 
David, Isaiah,
etc." 
Webster's   
1828     
Therefore all things whatsoever ye would that men should do to you,
do ye even so to them:
for this is the law and the prophets.


Matthew 7:12