Draw nigh to God, and he will draw nigh to you. Cleanse your hands, ye sinners; and purify your hearts, ye double minded.
James is speaking to double-minded Christians, who want to believe in Jesus in the heart, while yet disobeying Jesus with the body.
The idea of believers playing no role in, having no part in, not being responsible for our salvation is the effort of hypocrites to separate the responsibility of their souls from the sins of their bodies: they want to believe a lie that faith and obedience are separate from one another.
They would believe in the heart, while yet disobeying in the body.
We draw nigh to God. We purify our hearts and so purify ourselves, even as He is pure.
We are to resist temptation in the spirit and in the body.
We pull down every stronghold of lust and thought of disobedience in our minds.
We are given power to become the sons of God, and so to learn obedience to Him as Jesus did, even when the flesh is weak, and the mind doesn't feel like it.
They do not overcome the infirmity of the flesh by the help of God's grace, but rather overthrow judgement against sin by help of an 'unconditional grace' that is not of God, but of the world.
OSAS is the realm of them that only obey when convenient, and so pat themselves on the back as doing good. But then when lust calls, their bodies are given to sin, while pretending their hearts are still pure by 'faith', which is not the faith of Jesus, but is the dead faith of the children of disobedience upon whom is the wrath of God.