So are you trying to take away from what Jesus said in John 3:16?
Not at all. Neither is James. Jesus isn’t saying that we are saved by faith alone. Nor does the Catholic Church teach that. Believing that Jesus is the Son of God and accepting him as our saviour isn’t enough to be saved. It’s a question of defining what Jesus means by belief in him and understanding how it is that faith saves. Our belief in Jesus requires a total trust and a total giving of oneself to the message that our Lord proclaimed: Love of God and love of neighbour. Our deeds and actions arise from our beliefs. If we trust God (made visible in Jesus) and believe in his goodness and love with all our hearts, our trust and love should translate into good works. It isn’t merely belief in who Jesus is, but rather belief in his gospel message and living it that saves. Of course, like I said, our good deeds and actions may arise from our belief in who Jesus is. But an intellectual assent of faith by itself doesn’t save. Jesus himself says: “Not everyone who says to me, ‘Lord, Lord,’ will enter the kingdom of heaven, but only the one who does the will of my Father who is in heaven” (Matt 7:21). By doing the will of the Father, we are doing what the Son has proclaimed we should do. Jesus came to reveal all that God wills for us in his person. His message serves to inspire us to do good works in grace which reflect our fidelity to Christ. If we are truly faithful to him, by sincerely observing his teachings and commandments, then we can honestly say that we believe in him. Because by obeying him, we love him. How can we believe in someone if we don’t love him? To believe in Jesus is to love him, and to love him (God incarnate) is to keep his commandments. “If any one say, I love God, and hate his brother, he is a liar” (1 Jn 4:20). In other words, he doesn’t truly believe in God as he should.
Catechism of the Catholic Church (849)
“Those who, through no fault of their own, do not know the Gospel of Christ or his Church, but who nevertheless seek God with a sincere heart, and, moved by grace, try in their actions to do his will as they know it through the dictates of their conscience - those too may achieve eternal salvation.”***
Without a moral conscience, we couldn’t have a relationship with God. If we had never been told about the Mosaic moral law or the Gospel message, we would still have an idea of what is right and what is wrong with respect to how we conducted our lives and how we treated other people. This is what is known as the “natural law written on our hearts.” It is the law God has given each person, and it is found in the depths of their being (soul). It’s this law that Jesus admonished the Pharisees for ignoring in their interpretation and practice of the Mosaic law. The Second Vatican Council explains it this way, “In the depths of his conscience man detects a law which he does not impose on himself, but which holds him to obedience. Always summoning him to love good and avoid evil, the voice of conscience can when necessary speak to his heart more specifically: ‘do this, shun that’. For man has in his heart a law written by God. To obey it is the very dignity of man; according to it he will be judged (cf. Rom 2:14-16)” (Pastoral Constitution on the Church in the Modern World Gaudium et Spes, 16).God became incarnate to proclaim this law which embodies the Gospel message and is the spirit of the Mosaic moral law. Jesus is addressing the Jews in John’s gospel who failed to live up to the spirit of the law. Because of the hypocrisy of the scribes and elders, they were like “sheep without a shepherd”.
***Decree Concerning Justification (The Council of Trent)
CHAPTER VIII
HOW THE GRATUITOUS JUSTIFICATION OF THE SINNER BY FAITH IS TO BE UNDERSTOOD
But when the Apostle says that man is justified by faith and freely, [Rom. 3:24; 5:1] these words are to be understood in that sense in which the uninterrupted unanimity of the Catholic Church has held and expressed them, namely, that we are therefore said to be justified by faith, because faith is the beginning of human salvation, the foundation and root of all justification, without which it is impossible to please God [Heb. 11:6] and to come to the fellowship of His sons; and we are therefore said to be justified gratuitously, because none of those things that precede justification, whether faith or works, merit the grace of justification.
CHAPTER X
THE INCREASE OF THE JUSTIFICATION RECEIVED
Having, therefore, been thus justified and made the friends and domestics of God,[Eph 2:19] advancing from virtue to virtue,[Ps 83:8] they are renewed, as the Apostle says, day by day,[2 Cor. 4:16] that is, mortifying the members [Col. 3:5] of their flesh, and presenting them as instruments of justice unto sanctification, [Rom. 6:13, 19] they, through the observance of the commandments of God and of the Church, faith cooperating with good works, increase in that justice received through the grace of Christ and are further justified, as it is written: He that is just, let him be justified still; [Apoc. 22:11] and, Be not afraid to be justified even to death; [Ecclus. 18:22] and again, Do you see that by works a man is justified, and not by faith only?[James 2:24]***
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