From the very beginning, there have been people speaking God’s message and those declaring words that just sound good to them or to the crowd they’re part of. Jeremiah speaks of these two types of prophets here…the true prophet of God and the false prophet. Deuteronomy 18:21-22 speaks to discerning between the two this way, ” You may say to yourselves, ‘How can we know when a message has not been spoken by the Lord?’ If what a prophet proclaims in the name of the Lord does not take place or come true, that is a message the Lord has not spoken.” Also remember, prophesy has to be consistent with all prior revelation…an example would be if a prophet instructed Believers to serve another god, he would be a false prophet. Finally, be careful of people who claim their message is from God but when it doesn’t happen will rationalize, explain away, or in some way justify what they said was true…when it wasn’t.