“On the Crucifixion” by St Romanos the Melodist
In the Great Canon of St. Andrew of Crete (written about 725 AD) there’s a break after the 6th canticle, and then there’s something labeled “Kontakion.” It’s memorable to anyone who’s attended the Great Canon (Orthodox sing it during Lent), because this verse breaks in and seems so different, like it comes from a different source.
“O my soul, O my soul, arise; why are you sleeping?
The end is drawing near and you will be confounded.
Awake and watch that Christ God may spare you,
Who is everywhere present and fills all things.”