1 Corinthians 15

3 Because I transmitted to you at first that which I also received:*Received from whom? From God, either directly, or indirectly (through people like Peter). that Christ died for our sins according to the Scriptures, 4 and that He was buried, and that He was raised on the third day according to the Scriptures, 5 and that He was seen by Cephas, then by the Twelve.*Evidently ‘the Twelve’ became like a technical term to refer to the recognized group of apostles. When Jesus first appeared to that group during the evening of Resurrection Day, there were actually only ten present—the Iscariot was no longer a member and Thomas was absent. 6 After that He was seen by over five hundred brothers at once, most of whom are still living, while some have fallen asleep.*A euphemism for death used mainly of believers in the New Testament.