That word "fullness" when used in connection with Catholicism needs to be retired. I'm sick of hearing it. Every year during the Good Friday liturgy when we pray for the Jews "that they may attain the fullness of redemption" it makes me cringe. As if anyone can make the claim of having "the fullness of redemption" with any degree of authority.  Then you hear some Catholics say that we possess the "fullness" of the faith, as if any single Christian body can make that claim as well. It reeks of arrogance, which is not considered a Christian virtue, last I heard.