“Im sure you have a source that you excerpted that from.”
Yeah, it’s in the parenthesis. But here’s also a link to the same work. It’s paragraph 17.
http://www.newadvent.org/fathers/310104.htm
Not that I expect you to read it though.
23. Hold fast these traditions undefiled and, keep yourselves free from offense. Sever not yourselves from the Communion; deprive not yourselves, through the pollution of sins, of these Holy and Spiritual Mysteries. And the God of peace sanctify you wholly; and may your spirit, and soul, and body be preserved entire without blame at the coming of our Lord Jesus Christ 1 Thessalonians 5:23: To whom be glory and honour and might, with the Father and the Holy Spirit, now and ever, and world without end. Amen.
Lecture 23 paragraph 23
http://www.newadvent.org/fathers/310123.htm