Prophecy means "to speak the truth" or "to proclaim".

'Raise Up Your Faith!'
Prophecy delivered by Kenneth Copeland on June 30, 2014
Southwest Believers' Convention

“There are things available to you right now in the realm of the spirit,” saith The LORD, “that are far beyond your ability to reason it out. So lay aside the reason. Raise up your faith; exercise your faith and gratitude toward Me and I’ll show you things that will take your mind a while to grasp.”