Matthew 26:30

And when they had sung a hymn, they went out into the mount of Olives.

Matthew's account might lead one to suppose that immediately after the institution of the Lord's Supper, the Lord and his disciples departed from the room where the sacred scene occurred; but from John's account it is learned that several very important discourses were made by Jesus on that same occasion, extending the meeting for a considerable time. John 14-17 records the following as having taken place at that time: (1) the farewell discourse, (2) concerning the Comforter, (3) I am the true vine, (4) Christ's intercessory prayer, and other significant teachings. At least a part of these extended words of Christ might have been, and certainly could have been, spoken on the way to Gethsemane.

The singing of a hymn is significant. Singing, and not instrumental music, was always associated with Christ and the apostles. The presumption with which people have loaded the worship of Christ with their own devices is reprehensible. The New Testament affords no example of such innovations, but repeated references to singing are recorded (Colossians 3:16; Ephesians 5:19, etc.).