There is something that has been nagging at my mind for some years as I have said my Office according to the Liturgia Horarum. It is the word plenitudo, or fulness. I seem to keep on coming across it, but foolishly never make a note. But one example would be the nova Collect for the memoria (happily, a Festum in the Ebbsfleet Apostolic District, God bless it) of the Presentation of our Lady in the Temple, November 21: ... concede ut de plenitudine gratiae tuae nos quoque mereamur accipere (grant that we also may be worthy to receive of the fulness of thy grace).
Now it may be that this collect, and others with similar locutions, are not (as I confess I suspect) novae compositions, but come from the ancient sacramentaries of Western Christendom. Or that there are within the Tradition parallels; although the Concordance s.v. pleroma does not offer anything relevant from the Pauline Corpus. Perhaps someone with more skills than I possess in Information Technology is in a position to resolve this question.
Why does it worry me? To be frank, because I suspect it of arising from a semi-Pelagian mindset. Euchological formulae which are indubitably old ask that we be delivered from our sins; or saved from a very nasy fate; or cleansed from our vices; or be able diabolica vitare contagia. But those fulness phrases seem to me to suggest that we've already got quite a nice lot of Grace or Redemption or whatever, but are turning to God for a useful top-up, or to receive the total works. Which is not so much semi- as fully Pelagian. My suspicion fits disconcertingly well with the devastating critique of the ideology of the novae collects by Lorenzo Bianchi in the 1999 CIEL Redbook (Theological and Historical Aspects of the Roman Missal; these Redbooks, now sadly discontinued, were a most valuable resource. But Laurence Hemming's projected Journal will undoubtedly be more than a replacement).