John 13:30

Judas obeyed Jesus’ command (John 13:27) and left the upper room immediately. He missed most of the meal including the institution of the Lord’s Supper. John’s reference to it being night would be redundant if all he wanted to do was give a time reference. In view of his light and darkness motif, it seems that he wanted to point out the spiritual significance of Judas’ departure both for Judas and for Jesus (cf. Luke 22:53; John 1:4-5; et al.).

"As the Light of the world was about to depart and return to the Father, the darkness had come at last (cf. Luke 22:53). Again the contrast in imagery is clear. For John, Jesus is the Light of the world, and those who believe in Him come to the light and walk in the light. At the opposite extreme is Judas Iscariot, who rejected Jesus, cast in his lot with the powers of darkness, departed into the darkness, and was swallowed up by it." [Note: Harris, p. 204.]

"Judas was enveloped in an unilluminated night, never to be relieved. He was on the way to his own place (Acts 1:25)." [Note: Beasley-Murray, p. 239.]