Don't forget Dutchboy88 on your list...
The believers in Jesus Christ, alone, recognize the biblical truth behind Rom. 3:10-18.
Ironically, you would have never heard of this book without the Catholic Church...
The Biblical truth behind Rom. 3:10-18 is that we are not justified by works of the Law. The strictures of the Mosaic Law were a chastisement to prove to man that we are unable to save ourselves. They were a curse chosen by the Israelites in their unfaithfulness. Only through Christ's sacrifice and God's Grace are we redeemed.
The problem with Protestant theology in general is that it tends to stop there. Yes we are redeemed... Now what?
Read on into Ephesians and discover what we have become through Christ's sacrifice... we have been rejoined to God's Heavenly Family through a spirit of adoption and the Marriage Feast of the Lamb. Christ has been joined to His Church as One Flesh and we are joined to Christ through this union with the Church. In this union with Christ, we are joined also with the Holy Trinity and members of the Royal Family of Heaven (1 Cor 6:3).
In this perspective then, one can find the purpose for the Church Christ built... it facilitates our Heavenly family life here on Earth through the Sacraments. In Baptism, we take on the name of God (Father, Son and Holy Spirit). In Reconciliation, we take His discipline and are healed of our spiritual afflictions. In the Eucharist, we come together at His Table. In Confirmation, we are anointed by the Holy Spirit and enter into adulthood. In Holy Orders and Matrimony, we take on our Earthly vocations. In the Anointing of the Sick, our Lord comes to us in our infirmity. At its most basic, the Church helps us live our spiritual lives in the Family of God. It doesn't have to be more complicated than that... but it is still far deeper than can be imagined.
Protestants tell us over and over that our works are nothing before God... and yet the Bible tells us over and over that we will be judged by our works (Matt 16:27, Acts 26:20, 2 Cor 11:15, Titus 3:8, James 2:14-26, Rev 18:6, Rev 20:12-13). Can your theology handle this or does it gloss over as so many do? Catholic theology handles it quite easily. When we were in our sin, we were separated from God. God no more delighted in our deeds than a man would delight in the doings of the neighbor kids. Now that we are brought back into the Family of God, He does delight in our work and rewards us. In effect, Christ merited for us the ability to merit from God.
If you read Romans carefully, you will find that in speaking of "works", it is speaking specifically of "works of the Law". There is the lesson that has been too universalized to comport with the rest of Scripture.
I will agree that no one on this Earth knows the full truth... but at least the Catholic Church is teaching, building and preaching and (where it does not know) giving reverence to the Mysteries beyond Her grasp.
More of your errant history. Had the Roman cult allowed its constituents to actually read the text, you might have noticed that Paul is simply quoting passages from Isaiah, Psalms. And had you read anything other than the party line, you would have further noticed that Paul teaches that it does not depend on men who will (choose) or men who run (behave), but upon God. And He will have mercy on whom He chooses, not those who align with man-centered sacerdotalism, mariolotry, indulgences, and other cult worship practices. This might be terribly devastating to those who need the organization to legitimize their faith.
And don’t tell us that Rome is now going to take credit for the Torah, w’Nebuim, w’Kethubim. If so, they have raised the bar on their own arrogance.