24 Being mindful then of all these things, be urgent with all, for the speedy fulfilment of this precept. And tell me not, that you will do this little by little; nor put it off till the morrow, for this tomorrow never finds an end. Forty days have already passed away. Should the Holy Easter pass away, I will thenceforward pardon no one, nor employ further admonition, but a commanding authority, and severity not to be despised. For this apology drawn from custom is of no force.
Why may not the thief as well plead custom, and get free from punishment? Why may not the murderer and adulterer? Therefore I protest, and give warning to all, that if, when I have met you in private, and put the matter to the proof (and I will certainly put it to the proof), I detect any who have not corrected this vice, I will inflict punishment upon them, by ordering them to be excluded from the Holy Mysteries; not that they may remain always shut out, but that having reformed themselves, they may thus enter in, and with a pure conscience enjoy the Holy Table; for this is to be a partaker of the Communion!
God grant that through the prayers of those who preside over us, as well as of all the saints, having corrected these and all other deficiencies, we may obtain the kingdom of heaven through the grace and lovingkindness of our Lord Jesus Christ, with Whom to the Father, together with the Holy Spirit, be glory, honour, and adoration, now and ever, world without end. Amen.
Source: Homilies on the Statues (New Advent)