source: THE NEW LITURGICAL MOVEMENT
Yesterday, the world was busy in its pleasures, and the very children of God were taking a joyous farewell to mirth: but this morning, all is changed. The solemn announcement, spoken of by the prophet, has been proclaimed in Sion: the solemn fast of Lent, the season of expiation, the approach of the great anniversaries of our Redemption. Let us, then, rouse ourselves, and prepare for the spiritual combat.
But in this battling of the spirit against the flesh we need good armor. Our holy mother the Church knows how much we need it; and therefore does she summon us to enter into the house of God, that she may arm us for the holy contest. What this armor is we know from St. Paul, who thus describes it; 'Have your loins girt about with truth, and having on the breastplate of justice. And your feet shod with the preparation of the Gospel of peace. In all things, taking the shield and the sword of the Spirit, which is the word of God. The very prince of the apostles, too, addresses these solemn words to us: 'Christ having suffered in the flesh, be ye also armed with the same thought'. We are entering, today, upon a long campaign of the warfare spoken of by the apostles: forty days of battle, forty days of penance. We shall not turn cowards, if our souls can but be impressed with the conviction, that the battle and the penance must be gone through. Let us listen to the eloquence of the solemn rite which opens our Lent. Let us go whither our mother leads us, that is, to the scene of the fall.
The enemies we have to fight with, are of two kinds: internal, and external. The first are our passions; the second are the devils. Both were brought on us by pride, and man's pride began when he refused to obey his God. God forgave him his sin, but He punished him. The punishment was death, and this was the form of the divine sentence: 'Thou art dust, and into dust thou shalt return'. Oh that we had remembered this! The recollection of what we are and what we are to be, would have checked that haughty rebellion, which has so often led us to break the law of God. And if, for the time to come, we would preserve in loyalty to Him, we must humble ourselves, accept the sentence, and look on this present life as a path to the grave. The path may be long or short; but to the tomb it must lead us. Remembering this, we shall see all things in their true light. We shall love that God, who has deigned to set His heart on us notwithstanding our being creatures of death: we shall hate, with deepest contrition, the insolence and ingratitude, wherewith we have spent so many of our few days of life, that is, in sinning against our heavenly Father: and we shall be not only willing, but eager, to go through these days of penance, which He so mercifully gives us for making reparation to His offended justice.
This was the motive the Church had in enriching her liturgy with the solemn rite, at which we are to assist this morning. When, upwards a thousand years ago, she decreed the anticipation of the lenten fast by the last four days of Quinquagesima week, she instituted this impressive ceremony of signing the forehead of her children with ashes, while saying to them those awful words, wherewith God sentenced us to death: 'Remember, O man, that thou art dust, and into dust thou shalt return!' But the making use of ashes as a symbol of humiliation and penance, is of a much earlier date than the institution to which we allude. We find frequent mention of it in the Old Testament. Job, though a Gentile, sprinkled his flesh with ashes, that, thus humbled, he might propitiate the divine mercy and this was two thousand years before the coming of our Savior. The royal prophet tells us of himself, that he mingled ashes with his bread, because of the divine anger and indignation. Many such examples are to be met with in the sacred Scriptures; but so obvious is the analogy between the sinner who thus signifies his grief, and the object whereby he signifies it, that we read such instances without surprise. When fallen man would humble himself before the divine justice, which has sentenced his body to return to dust, how could he more aptly express his contrite acceptance of the sentence, than by sprinkling himself, or his food, with ashes, which is the dust of wood consumed by fire? This earnest acknowledgment of his being himself but dust and ashes, is an act of humility, and humility ever gives him confidence in that God, who resists the proud and pardons the humble.
-- Dom Prosper Gueranger, The Liturgical Year