One of his inner circle of 12 apostles betrayed him, nine fled at his arrest, and another — Peter — pretended not to know him. The last, John, seems to have watched events unfold from a safe distance (Luke 23:49; John 19:25-27). Thereafter, as prominent followers of a convicted and executed "criminal," they went into hiding.
Only a few weeks later, though, the 11 surviving apostles were transformed. They even appointed a willing replacement for Judas.