The test of a prophet.
Deuteronomy 18 NKJV
21 And if you say in your heart, ‘How shall we know the word which the LORD has not spoken?’— 22 when a prophet speaks in the name of the LORD, if the thing does not happen or come to pass, that is the thing which the LORD has not spoken; the prophet has spoken it presumptuously; you shall not be afraid of him.
Joseph Smith has brought new religious beliefs to the table. God has given us a simple test for all prophets. Has Joseph Smith given any prophecies that he said were from God but failed to come true?