One of the biggest mysteries in biblical scholarship concerns the identity of “the disciple whom Jesus loved.” According to the Gospel of John, this was the disciple who leaned on Jesus during the Last Supper, and the only male disciple present at the crucifixion.
In addition, John 21:24 implies that the entire Gospel of John is based on this disciple's memories. Yet, oddly, it never gives his name. The other three gospels don't give his name either. In fact they never even mention this “Beloved Disciple” (as he is often called). They also say nothing about any disciple leaning on Jesus during the Last Supper or witnessing the crucifixion. Their total silence on the matter only adds to the mystery.
A number of scholars have argued that the Beloved Disciple was Lazarus, the brother of Mary and Martha of Bethany, and the man that Jesus raised from the dead. The reason for this is the fact that when the sisters summoned Jesus to help Lazarus, they said: “Lord, the one you love is sick.” Some modern theories even claim that Mary Magdalene was the Beloved Disciple – an idea which would certainly impress Dan Brown.
