OK, smart alecks …

you are correct of course, but I’m pretty sure that the OP meant verses that are found in the Deuterocanonical books of the OT – i.e., that wouldn’t be found in the majority of “Protestant” Bibles.
As to my favorite “Catholic” verse under that criteria … well, just check out my sig.
I’m not so smart.

So maybe I did get the intent of the OP wrong. I wasn’t thinking a “Catholic Verse” would be limited to the OT dueterocanonical books for sure. But (when I consider the question a little more seriously) would consider “Catholic Verses” (that instruct non-Catholics about some Catholic doctrine they don’t understand) to be things from the WHOLE Bible including passages like:
1 Corinthians 3:14 If the** work **stands that someone built upon the foundation, that person will receive a wage.
15 But if someone’s work is burned up, **that one will suffer **loss; the person will be saved, 8 but only as through fire.
(Temporary suffering after death prior to experiencing the fruits of salvation - agrees with the Catholic doctrine of Purgatory. And also that “works matter”.)
Or one of these from the “Catholic Apologetics Cheat Sheet” below < (bookmark this, I do! Even if you are not Catholic dear readers, as you can explore Catholic thinking on doctrines not agreed upon by everyone who call themselves “Christian”).
catholiceducation.org/articles/apologetics/ap0039.html
There ARE some verses in the link above from the dueterocanonical OT books. Usually they are not the ONLY scriptures written on the issue … and would be “outranked” by NT scriptures and/or the words of Christ – even when He seems to ***restate things written first in those scriptures. ***
en.wikipedia.org/wiki/Sirach
Some people claim that there are several allusions to the Wisdom of Sirach in the New Testament. These include:
- the Virgin Mary’s magnificat in Luke 1:52 following Sirach 10:14;
- the description of the seed in Mark 4:5,16-17 following Sirach 40:15,
- Christ’s statement in Matthew 7:16,20 following Sirach 27:6
*and James 1:19 quoting Sirach 5:11.
The distinguished patristic scholar Henry Chadwick has claimed that:
- in Matthew 11:28 Jesus was directly quoting Sirach 51:27, as well as comparing
- Matthew 6:12 “And forgive us our debts, as we forgive our debtors.” (KJV) with Sirach 28:2 “Forgive your neighbor a wrong, and then, when you petition, your sins will be pardoned.”
(Some other translations, such as the New Revised Standard Version, read, for Matthew 6:12, “And forgive us our trespasses, as we forgive those who trespassed against us.”)
I haven’t seen the In 'n Out scriptures at all (yet). But if one of them includes Matthew 11:28 - then that includes a “Catholic Scripture” from Sirach AND from Matthew – even though Jesus had not technically begun His Church at the moment He spoke the words – but was acting within the “exclusive at the time” Jewish faith as its promised Messiah, God enfleshed). Though His Catholic Church was being formed and the day that all people would be invited into a covenant relationship with God Himself was nearing.
In today’s news is word about the oldest known Bible in existence - called the Codex Sinaiticus being presented online.
Dating back to the Fourth Century, close to the time that the Church first canonized the approved scriptures, the Codex is recoded in Greek. An online question as to what is the oldest Bible in existence today was answered thus on
Answerbag.com (without additional documentation):
The world’s oldest known copy of the complete bible (in bound book form), dating from 300-350 AD, is the Codex Sinaiticus. It is a translation from Hebrew and Greek manuscripts into an all Greek bible. It is believed that it may be one of 50 original bibles that the Emperor Constantine commissioned after converting the Eastern Roman Empire to Christianity.
It was discovered at the Monastery of St. Catherine in Sinai, Egypt, which was built on what is traditionally believed to be the site of where Moses encountered God as a burning bush, and later received the Ten Commandments.
Although most of the Old Testament text has been destroyed, the New Testament text has survived and is in general agreement with the text used to establish the KJV of the bible.
answerbag.com/q_view/14282
http://t0.gstatic.com/images?q=tbn:ANd9GcSW2PIYJjL59Ioq-LSBUAW6znvH7NvoEOfv_XgrPnVnUFdPhhAobQ
Codex Sinaiticus Bible, 350 AD
http://t1.gstatic.com/images?q=tbn:ANd9GcTg3T6eoZ8pMnItiQ5qkR9e-76XBC-XoBTseAyL_TpjprqkXco3
St. Catherine Monastery, Sinai Egypt – at the traditional site of the burning bush, and where God handed down the Ten Commandments to Moses.
vatican.va/holy_father/john_paul_ii/travels/documents/hf_jp-ii_hom_20000226_sinai_en.html - Pope John Paul II’s 2/26/2000 homily at St Catherine’s Monastery during his visit to Sinai.
In this homily the Pope compares Sinai to a better mountain and more fulfilled message. That of the Mt. of Transfiguration – and our transfiguration from mere creatures to “Son! Daughter!” of our loving “FATHER!” :extrahappy::heaven: