Christianity differs from many world religions in that its validity is rooted in history. Consider Paul’s summary of the Good News.
I would remind you, brothers, of the Gospel I preached to you, which you received, in which you stand, and by which you are being saved…. For I delivered to you as of first importance what I also received: that Christ died for our sins in accordance with the Scriptures, that He was buried, that He was raised on the third day in accordance with the Scriptures. (1 Corinthians 15:1-4)
This matter of “first importance” is not merely a wise philosophy, a feeling of enlightenment or a vague legend. It centers on factual history about a unique Person, the Christ. If that history is not true, then the Good News is no news at all, but rather a lie.
If Christ has not been raised, then our preaching is in vain and your faith is in vain. We are even found to be misrepresenting God. (1 Corinthians 15:14-15)
The reality is that Jesus’ death and resurrection were well attested by many witnesses (1 Corinthians 15:5-8), as were the powerful events of His life (John 20:30-31; 21:24; Acts 2:22, 32; 26:26). Their recorded testimony has been preserved for us in the New Testament.