While in the Garden of Gethsemane (on the western slopes of Olivet, northeast of the temple across the Kidron Valley), the disciples sleep as Jesus prays in anguished submission to his Father about drinking the cup of his wrath.
Perhaps after midnight (hence early Friday morning), Jesus is betrayed by Judas with a kiss, and arrested by a band of soldiers, their captain, and the officers of the Jews. With his sword, Peter cuts off the ear of Malchus (servant of the high priest), but Jesus heals his ear. The disciples flee.