@Mummabear prophecy is not the same as a prediction. If God has given you some kind of knowledge, that is prophecy. I used to go to an evangelical church and saw prophecy* all the time. It was usually interpersonal stuff. Sometimes someone would get up and say something to the whole church. But the prophets of the bible were given a word for the nation. There are plenty of preachers on TV doing that every day.
*if you accept it as real at all.