Today is the first day of Lent for the Western church (the various Orthodox churches - have a different calendar and start a bit later). It's not something Baptists tend to observe, and it's not something I grew up with, but I've come to really value it. It's 40 days (excluding Sundays) in the lead-up to Easter when we are encouraged to 'purify' ourselves. It starts with Ash Wednesday, where you can get an ash cross inscribed on your forehead. In the past I've done this at an Anglican church, where they say something like "Dust you are and to dust you will return" - a reminder of our mortality. Today I went to our local Catholic church (mostly because I'd been hoping to go with a Catholic friend, but in the end I went on my own), and there they said "Turn away from sin and live out the gospel".
The ashes survived the bike ride home pretty well!