Holy Week, which begins this Sunday, Palm Sunday, is a helpful corrective.
Each year, Holy Week reminds us that Christianity is something we participate in, and Christian faith is something we do.
Just look at the action verbs:
On Palm Sunday) we commemorate Jesus' Passion (his suffering, or enduring) -- the short final period of Jesus' life beginning with his triumphant entrance into Jerusalem, moving through to his crucifixion. We commemorate the fact that adoring crowds shouting "hosanna!" can turn -- in a week's time -- to murderous mobs shouting "crucify him!" demanding the death penalty. Then,
On Maundy (commandment) Thursday), we obey Jesus' commandment to serve other people and to eat a meal in remembrance of the Last Supper.