The following examples of failed prophecies have been selected from the long list found at the Skeptic's Annotated Bible.
As a punishment for killing Abel, God says Cain will be "a fugitive and a vagabond." Genesis 4:12 Yet in just a few verses (Genesis 4:16-17 ) Cain will settle down, marry, have a son, and build a city.
God promises to cast out many nations including the Canaanites and the Jebusites. Exodus 33:2 But he was unable to fulfill his promise.
"If there be a prophet among you, I the LORD will ... speak unto him in a dream." Numbers 12:6 Now there's a reliable way to communicate with someone!
God promises to cast out seven nations including the Amorites, Canaanites, and the Jebusites. Deuteronomy 7:1 But he was unable to fulfill his promise.
God promises to give Joshua all of the land that his "foot shall tread upon." He says that none of the people he encounters will be able to resist him. Joshua 1:3-5 But later we find that God didn't keep his promise, and that many tribes withstood Joshua's attempt to steal their land.
James quotes a scripture that says, "The spirit that dwelleth in us lusteth to envy." James 4:5 But there is no such verse in the Bible.
John expects to live to see Jesus return. 1 John 3:2
"And the stars of heaven fell unto the earth...." Revelation 6:13 To John, the stars are just little lights a few miles away that can easily fall to the earth.