passion (n.)
c. 1200, "the sufferings of Christ on the Cross; the death of Christ," from Old French passion "Christ's passion, physical suffering" (10c.), from Late Latin passionem(nominative passio) "suffering, enduring," from past-participle stem of Latin pati"to endure, undergo, experience," a word of uncertain origin. The notion is "that which must be endured."
Passion Week is the week leading up to Easter when we will be intentional each day in our thoughts, actions, and prayers, as we remember the suffering Christ endured because of His passionate love for us.