In Matthew 26:30, the same detail of singing a hymn and going to the Mount of Olives is recorded, confirming the parallel account of the Last Supper's conclusion.

Luke 22:39 adds that Jesus went to the Mount of Olives 'as was his custom,' providing context for his habitual prayer retreat after the Last Supper.

Psalm 113:1 begins the Hallel (Psalms 113-118), the very hymn likely sung by Jesus and the disciples at the Last Supper, directly providing the content of their praise.

Ephesians 5:18-20 exhorts believers to sing psalms and hymns, a practice exemplified by Jesus and the disciples.

Colossians 3:16 instructs singing psalms and hymns, consistent with the hymn sung in Mark 14:26.