Ash Wednesday opens the season of Lent, forty-six days before Easter Sunday. The ashes imposed on the forehead — made from the previous year's Palm Sunday branches — carry the words heard at every Catholic burial: "Remember that you are dust, and to dust you shall return" (Genesis 3:19). The ashes are a sign of penance, rooted in the Old Testament practice of sitting in sackcloth and ashes (Jonah 3:6, Daniel 9:3).
Lent has been a pilgrimage season since the early Church. Catechumens prepared for the Easter Vigil baptism; penitents sought reconciliation before being readmitted to communion at Holy Thursday. The forty days echo Christ's own fast in the wilderness (Matthew 4:1-11), and the discipline of walking to a holy place — Jerusalem, Rome, Santiago de Compostela, or the countless local shrines — became one of the ways the faithful lived that interior preparation bodily.
The Station churches of Lent, observed in Rome since at least the fourth century, assign a particular church to each day of Lent where the Pope or his deputies celebrated Mass with the city's faithful. The practice binds the liturgy to a sequence of real places — Santa Sabina, where the ashes are blessed; Santa Prassede; Santa Maria in Trastevere — and turns Lent itself into a pilgrimage through the city.
