4 With your thoughts then on your degrees, and keeping your professions, approach ye to the Flesh of the Lord, approach to the Blood of the Lord. Whoso knows himself to be otherwise, let him not approach. Be moved to compunction rather by my words. For they who know that they are keeping for their wives, what from their wives they require, they who know that they are in every way keeping continence, if this they have vowed to God, feel joy at my words; but they who hear me say, “Whosoever of you are not keeping chastity, approach not to that Bread,” are saddened.
And I should have no wish to say this; but what can I do? Shall I fear man, so as to suppress the truth? What, if those servants do not fear the Lord, shall I therefore too not fear? As if I do not know that it is said, “'You wicked and slothful servant,' you should dispense, and I require.” Lo, I have dispensed, O Lord my God; lo, in Your Sight, and in the sight of Your Holy Angels, and of this Your people, I have laid out Your money; for I am afraid of Your judgment. I have dispensed, do Thou require.
Though I should not say it, You would do it. Therefore I rather say, I have dispensed, do Thou convert, do Thou spare. Make them chaste who have been unchaste, that in Your Sight we may rejoice together when the judgment shall come, both he who has dispensed and he to whom it has been dispensed. Does this please you? May it do so! Whosoever of you are unchaste, amend yourselves, while you are alive. For I have power to speak the word of God, but to deliver the unchaste, who persevere in wickedness, from the judgment and condemnation of God, have I no power.
Source: Sermons on Selected Lessons of the New Testament (New Advent)