In today's second reading from 1 Corinthians 15, Paul wrote: I handed on 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; that he appeared to Cephas, then to the Twelve. After that, he appeared to more than five hundred brothers at once, most of whom are still living, though some have fallen asleep. After that he appeared to James, then to all the Apostles. Last of all, as to one born abnormally, he appeared to me. There are many other writings showing that Christ did rise from the dead, but listening to what Paul said here alone is enough to believe that the Resurrection of the Lord indeed took place.