From the Book of Common Prayer:
Dear People of God: The first Christians observed with great devotion the days of our Lord's passion and resurrection, and it became the custom of the Church to prepare for them by a season of penitence and fasting. This season of Lent provided a time in which converts to the faith were prepared for Holy Baptism. It was also a time when those who, because of notorious sins, had been separated from the body of the faithful were reconciled by penitence and forgiveness, and restored to the fellowship of the Church. Thereby, the whole congregation was put in mind of the message of pardon and absolution set forth in the Gospel of our Savior, and of the need which all Christians continually have to renew their repentance and faith.
I invite you, therefore, in the name of the Church, to the observance of a holy Lent, by self-examination and repentance; by prayer, fasting, and self-denial; and by reading and meditating on God's holy Word. And, to make a right beginning of repentance, and as a mark of our mortal nature, let us now kneel before the Lord, our maker and redeemer.
Silence is then kept for a time, all kneeling.
If ashes are to be imposed, the Celebrant says the following prayer:
Almighty God, you have created us out of the dust of the earth: Grant that these ashes may be to us a sign of our mortality and penitence, that we may remember that it is only by your gracious gift that we are given everlasting life; through Jesus Christ our Savior. Amen.
The ashes are imposed with the following words:
Remember that you are dust, and to dust you shall return.
* * *
And so begins the Lenten season.