Create a respectful and devotional watercolor artistic interpretation of the biblical event described in Luke 22:44. This event portrays intense prayer and potent emotion. The scene should be filled with an atmospheric depiction of a solitary figure, representing Jesus, in fervent prayer. Moonlight filtering through olive trees should outline the figure. The landscape around him should be rendered as an olive grove. The palette should be muted and somber, in line with the solemn nature of the event. No text or words should be used to maintain the evocative visual narrative.