ISB ~ John 17 v1

lifted up his eyes:A traditional prayer gesture (Ps 123:1; Mk 6:41).

the hour:The time of Christ’s Passion begins in earnest. Because it involves his rejection and the aggressive assault of the devil, it is also called the hour of “darkness” (Lk 22:53).

See topical essay:The “Hour” of Jesus at Jn 4.