What prophets? Webster or Oxford??? LOL
See if you ever read the bible, (which I really am convinced you don't)you would know the role of the prophets, and that they can predict either doom and gloom or hope for Israel- both national Israel and spiritual Israel. Scripture always has every answer that you are looking for, the answers to the questions are contained in the text.
I would tell you but you scoff way too much, will probably deny the scripture says what it does, although it says the same thing dozens of times, and then argue over the word "and" in the conjunctive or indicative state.