Although Ash Wednesday is not a Catholic holy day of obligation, it is an important part of the season of Lent. The first clear evidence of Ash Wednesday is around 960, and in the 12th century people began using palm branches from the previous Palm Sunday for ashes.

Some of the largest crowds in the year will show up at mass to receive ashes on Ash Wednesday. Though this is not a holy day of obligation in our tradition, many people would not think of letting Ash Wednesday go by without a trip to church to be marked with an ashen cross on their foreheads. Even people who seldom come to Church for the rest of the year may make a concerted effort to come for ashes.

I used to think it was funny that those who do not share our traditions often make a point of telling us that we have something on our foreheads, assuming we would want to wash it off, but many Catholics wear that smudge faithfully all day.

The readings assigned to Ash Wednesday highlight the call to conversion. The first reading from the prophet Joel is a clarion call to return to the Lord "with fasting, and weeping and mourning." Joel reminds us that our God is "gracious and merciful...slow to anger, rich in kindness and relenting in punishment," thus inviting us to trust in God's love as we seek to renew our life with God.

It is important to note that Joel does not call only for individual conversion. His appeal is to the whole people, so he commands: "Blow the trumpet in Zion, proclaim a fast, call an assembly; gather the people, notify the congregation; assemble the elders, gather the children and the infants at the breast." As we enter Lent, the season of renewal, we are united with all of God's people, for we all share the need for continued conversion and we are called to support one another on the journey. Imitating those who joined the Order of Penitents in ages past, we all become a community of penitents seeking to grow closer to God through repentance and renewal.

St. Paul implores us in the second reading to "be reconciled to God." "Now," he insists, "is a very acceptable time; behold, now is the day of salvation." The time to return to the Lord is now, this holy season, this very day.

The Gospel for Ash Wednesday gives us good advice on how we are to act during Lent. Jesus speaks of the three main disciplines of the season: giving alms, praying and fasting. All of these spiritual activities, Jesus teaches us, are to be done without any desire for recognition by others. The point is not that we should only pray alone and not in community, for example, but that we should not pray in order to be seen as holy. The same is true of fasting and works of charity; they do not need to be hidden but they are to be done out of love of God and neighbor, not in order to be seen by others.

There is a certain irony that we use this Gospel, which tells us to wash our faces so that we do not appear to be doing penance on the day that we go around with "dirt" on our foreheads. This is just another way Jesus is telling us not to perform religious acts for public recognition. We don't wear the ashes to proclaim our holiness but to acknowledge that we are a community of sinners in need of repentance and renewal.

The call to continuing conversion reflected in the readings today is also the message of the ashes. We move through Lent from ashes to the baptismal font. We dirty our faces on Ash Wednesday and are cleansed in the waters of the font.

More profoundly, we embrace the need to die to sin and selfishness at the beginning of Lent so that we can come to fuller life in the Risen One at Easter.

When we receive ashes on our foreheads, we remember who we are. We remember that we are creatures of the earth ("Remember that you are dust"). We remember that we are mortal beings ("and to dust you will return"). We remember that we are baptized. We remember that we are people on a journey of conversion ("Turn away from sin and be faithful to the gospel"). We remember that we are members of the body of Christ (and that smudge on our foreheads will proclaim that identity to others, too).

Renewing our sense of who we really are before God is the core of the Lenten experience. It is so easy to forget, and thus we fall into habits of sin, ways of thinking, things we do to others or more important don't do for others and ways of living that are completely contrary to God's will.

In this we are like the Ninevites in the story of Jonah. It was "their wickedness" that caused God to send Jonah to preach to them. Jonah resisted that mission and found himself in deep water. Rescued by a large fish, Jonah finally did God's bidding and began to preach in Nineveh. His preaching obviously fell on open ears and hearts, for in one day he prompted the conversion of the whole city.

From the very beginning of Lent, God's word calls us to conversion. If we open our ears and hearts to that word, we will be like the Ninevites not only in their sinfulness but also in their conversion to the Lord. That, simply put, is the point of Ash Wednesday!