The part man has to act in the salvation of the soul is to believe on Jesus Christ as a perfect Redeemer, not for some other man, but for his own self.
Christ imputes His perfection and righteousness to the believing sinner when he does not continue in sin, but turns from transgression to obedience of the commandments.
While God can be just, and yet justify the sinner through the merits of Christ, no man can cover his soul with the garments of Christ’s righteousness while practicing known sins, or neglecting known duties.
The apostle James saw that dangers would arise in presenting the subject of justification by faith, and he labored to show that genuine faith cannot exist without corresponding works. The experience of Abraham is presented. “Seest thou,” he says, “how faith wrought with his works, and by works was faith made perfect?” James 2:22. Thus genuine faith does a genuine work in the believer. Faith and obedience bring a solid, valuable experience.
Faith and works are two oars which we must use equally if we [would] press our way up the stream against the current of unbelief.
The so-called faith that does not work by love and purify the soul will not justify any man. “Ye see,” says the apostle, “how that by works a man is justified, and not by faith only.” James 2:24. Abraham believed God. How do we know that he believed? His works testified to the character of his faith, and his faith was accounted to him for righteousness. We need the faith of Abraham in our day, to lighten the darkness that gathers around us, shutting out the sweet sunlight of God’s love, and dwarfing spiritual growth. Our faith should be prolific of good works; for faith without works is dead. FLB 115
He [Elijah] kept reviewing his life, to see where he had failed to honor God, he confessed his sins, and thus continued to afflict his soul before God, while watching for a token that his prayer was answered. As he searched his heart, he seemed to be less and less, both in his own estimation and in the sight of God. It seemed to him that he was nothing, and that God was everything; and when he reached the point of renouncing self, while he clung to the Saviour as his only strength and righteousness, the answer came. Pr 140
Yea, a man may say, Thou hast faith, and I have works: shew me thy faith without thy works, and I will shew thee my faith by my works. James 2:18 (King James Version)