"There is absolutely nothing in the Bible that would present December 21, 2012, as the end of the world. The Bible nowhere presents the astronomical phenomena the Mayans pointed to as a sign of the end times. It would seem inconsistent of God to allow the Mayans to discover such an amazing truth while keeping the many Old Testament prophets ignorant of the timing of the events. In summary, there is absolutely no biblical evidence that the 2012 Mayan prophecy should be considered a reliable prediction of doomsday.
Also included in the ancient Mayan prediction that December 21, 2012, would be the end of the world are the following theories: our sun is a god; the sun is powered by the blood of human sacrifice; the creation moment occurred at 3114 B.C. (despite all evidence that it happened much earlier); and the visual alignment of stars has some significance for everyday human life. Like every other false religion, the Mayan religion sought to elevate the creation instead of the Creator Himself. The Bible tells us about such false worshipers: “They exchanged the truth of God for a lie, and worshiped and served created things rather than the Creator” (Romans 1:25), and “since the creation of the world God’s invisible qualities – His eternal power and divine nature – have been clearly seen, being understood from what has been made, so that men are without excuse” (Romans 1:20). To accept the Mayan 2012 prophecy is also to deny the clear biblical teaching about the end of the world. Jesus told us, “But about that day or hour no one knows, not even the angels in heaven, nor the Son, but only the Father.” (Mark 13:32)."
(an excerpt from http://www.gotquestions.org/ )
