Your Protestant church probably doesn’t observe the church calendar that marks such events as Epiphany and Pentecost. You might even regard this structure as legalistic, subversive of the true gospel of grace.

But make no mistake: you follow some calendar. It might be the school year, based on the agricultural seasons of planting, growing, and harvesting. Or it might be the so-called Hallmark Church Calendar: Valentine’s Day, Mother’s Day, Fathers’s Day, Fourth of July, Veterans Day, and so on. The same goes for our liturgy. Every church has a liturgy. The only question is whether it’s edifying and biblical.

Perhaps responding to the secular calendars adopted by so many Protestant churches, many congregations across the denominational spectrum have reached back into Christian history to clean up and capture structures that follow the story of Scripture. Lent is one such season leading up to Easter marked by fasting, repentance, and anticipation. Though typically associated with Roman Catholics, Lent has been infused with gospel-centered theology by many evangelicals today.

But not everyone thinks it’s a good idea to observe Lent. After all, it’s not prescribed by Scripture. The fast may send mixed messages to believers with a Roman Catholic background. By requiring Christians to practice something not mandated by God’s Word, we may be inhibiting spiritual freedom. And the church calendar—even Easter—may imply that some days are more holy than others. Good Friday and Christmas might have gone mainstream, but many Protestants even today believe they distract from the Lord’s Day and thus do not mark them on their calendars.

In the latest edition of Going Deeper with TGC, host Mark Mellinger and I talk about the origins, theology, and practice of Lent with Ligon Duncan, senior minister of First Presbyterian Church in Jackson, Mississippi. He traces the roots of Lent to Pope Gregory the Great in the 500s and explains its explicitly meritorious purpose. And he cites the history of Reformation in Switzerland, which began with eating sausages during Lent. Whether you side with Duncan or agree with Lutherans and Anglicans that we can keep liturgical ceremonies while adapting their theology, you’ll benefit from listening to Duncan and going deeper with the sources he mentions:

As the podcast continues, The Gospel Project managing editor Trevin Wax talks with 9Marks editorial director Jonathan Leeman about the Old Testament wisdom literature. How do we read and rightly apply these passages? Leeman walks through Psalm 20 to show how we read through the lens of what Jesus Christ has accomplished on our behalf. Wax closes by asking Leeman how we should interpret Song of Solomon: is it a love poem or allegory of Christ and the church?