Lent started two days ago on Ash Wednesday and lasts nearly 40 days and 40 nights until its end, the Easter holiday. In the duration of this time period, those who follow this Catholic tradition must give up their utmost temptation and endure the obstacles of self-control to test their own will power.

Earlier this month, a group called American Atheists posted a billboard in New York saying, “You know it’s a myth: This season, celebrate reason!” As one might expect, this caused a bit of a stir, with the Catholic League returning salvos with a billboard of their own, saying, “You know it’s real: This season, celebrate Jesus.”