Note 1 at Mt 26:50: Jesus had already revealed Judas as the one who would betray Him (Mt 26:21-25, Mr 14:18-21, Lu 22:21-23, and Joh 13:21-30), and in Joh 18:4, it is stated that Jesus knew all things that were going to happen to Him. So there is no doubt that He knew exactly what Judas was doing. Yet Jesus greeted Judas by saying, "Friend." Jesus never rejected Judas until after Judas had rejected Him (2Ti 2:12-13).