21 And in the meanwhile I desire to fix three precepts in your mind, to the end that you may accomplish me these during the fast,— viz. to speak ill of no one; to hold no one for an enemy; and to expel from the mouth altogether the evil custom of oaths. And as when we hear that some money tax is imposed, each one going within, and calling his wife and children and servants, considers and consults with them how he may pay this tribute, so also let us do with respect to these spiritual precepts.
Let every one when he has returned home call together his wife and children, and let him say, that a spiritual tribute was imposed this day: a tribute by which there will be some deliverance and removal of these evils; a tribute which does not make those who pay it poor, but richer; that is to say, to have no enemy, to speak evil of no man, and to swear not at all. Let us consider; let us think; let us resolve how we may fulfill these precepts. Let us exert every endeavour. Let us admonish each other.
Let us correct each other, that we may not go to the other world as debtors, and then, needing to borrow of others, suffer the fate of the foolish virgins, and fall from immortal salvation. If we thus set our lives in order, I warrant you and promise, that from this there will be deliverance from the present calamity, and a removal of these dreadful ills; and what is greater than all, there will be the enjoyment of the good things to come. For it were fitting that I should commit to you the whole body of virtue; but I think it the best method of correction, to take the laws by parts, and reduce them to practice, and then to proceed to others.
For as in a given field, the husbandman, digging it all up piecemeal, gradually comes to the end of his task; so we too if we make this rule for ourselves, in any wise to reduce to a correct practice these three precepts during the present Lent, and to commit them to the safe custody of good habit, we shall proceed with greater ease to the rest; and by this means arriving at the summit of spiritual wisdom, we shall both reap the fruit of a favourable hope in the present life; and in the life to come we shall stand before Christ with great confidence, and enjoy those unspeakable blessings; which, God grant, we may all be found worthy of, through the grace and loving kindness of Jesus Christ our Lord, with Whom be glory to the Father and the Holy Spirit forever and ever. Amen.
Source: Homilies on the Statues (New Advent)