How can we know beyond any doubt that Jesus really rose from the dead - that this singular event is not some queer predilection on the part of the Christian but is rather faith founded on irrefutable fact?
As Christians, we must be prepared to demonstrate that Christ's resurrection was an event that occurred in time and space - that it was, in reality, historical and not mythological (cf. 2 Peter 1:16). The importance of this event cannot be minimized, for Jesus Himself proclaimed that His resurrection would prove His power over death, and thus His deity (John 2:18-22). Not only that, but Christ's resurrection is the very heart of the gospel (1 Corinthians 15:1-4).
When I first began examining the evidences for Christianity, I discovered that belief in the Resurrection does not constitute a blind leap into a dark chasm but rather a step into the light. Indeed, the evidence for Christ's resurrection is so overwhelming that no one can examine it with an open mind desiring to know the truth without becoming convinced of its truth.
Of the many evidences available, none is more compelling than the fact that the resurrected Christ appeared to over five hundred individuals at a single time (1 Corinthians 15:6). Christ appeared to numerous other individuals as well, providing "many convincing proofs" of His resurrection (Acts 1:3). Christ in His resurrection body was even touched on two occasions (Matthew 28:9; John 20:17), and challenged the disciples (Luke 24:39) and Thomas (John 20:27) to feel His wounds.
For those who continue to harbor doubts about the veracity of the biblical evidence, one need only point to Dr. Simon Greenleaf, the greatest authority on legal evidences in the 19th century. It is noteworthy that after examining the evidence for the resurrection of Jesus Christ, Greenleaf suggested that any cross-examination of the eyewitness testimonies recorded in Scripture would result in "an undoubting conviction of their integrity, ability, and truth."
Taken from "Jesus' Resurrection: Miracle or Myth?" by Christian Research Institute (used by permission).