The answer is: Sung a hymn

Mark 14:26

After the Last Supper, the image of Jesus and his disciples singing a hymn together adds a layer of warmth to an otherwise intense moment. This detail in Mark 14:26 suggests a sense of unity and serenity amidst the turmoil that was about to unfold. It's likely they sang a passage from the Psalms, specifically one of the Hallel Psalms—Psalms 113-118—which were traditionally sung during festive occasions. The Hallel often celebrates deliverance and triumphant faith, riveting themes considering Jesus was on the cusp of suffering, yet it echoes hope.

Historically, hymns and singing have played a vital role in Jewish tradition, particularly during Passover celebrations, helping the community come together in praise and remembrance. Interestingly, this moment captures a bit of camaraderie that can be inspiring; facing significant trials isn't something we do alone but alongside cherished companions.

The reference to the Mount of Olives can't be missed either. It’s a site of profound importance throughout scripture, often associated with deep spiritual experiences including prayer, reflection, and divine encounters. Fun trivia: directly from the Mount, you can spot key landmarks in Jerusalem, including the Temple Mount. Many believe that Jesus went there to pray because paths from the Upper Room led directly there, turning it into a sacred space teeming with historical significance as the landscape changed with each eventful moment in this rich narrative tapestry. It’s not just a goodbye; it's also an embrace of community in faith, even as turmoil looms ahead.