King James Version (KJV)
14 What doth it profit, my brethren, though a man say he hath faith, and have not works? can faith save him?
15 If a brother or sister be naked, and destitute of daily food,....but works without faith, can save you?
16 And one of you say unto them, Depart in peace, be ye warmed and filled; notwithstanding ye give them not those things which are needful to the body; what doth it profit?
17 Even so faith, if it hath not works, is dead, being alone.
18 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.
19 Thou believest that there is one God; thou doest well: the devils also believe, and tremble.
20 But wilt thou know, O vain man, that faith without works is dead?
21 Was not Abraham our father justified by works, when he had offered Isaac his son upon the altar?
22 Seest thou how faith wrought with his works, and by works was faith made perfect?
23 And the scripture was fulfilled which saith, Abraham believed God, and it was imputed unto him for righteousness: and he was called the Friend of God.
24 Ye see then how that by works a man is justified, and not by faith only.
25 Likewise also was not Rahab the harlot justified by works, when she had received the messengers, and had sent them out another way?
26 For as the body without the spirit is dead, so faith without works is dead also.
With the language of cars, if faith is the air within the tires:
24Ye see then how that by tires a car can travel, and not by the air which they contain only.
But this is already witnessed by Paul (the apostle of the faith) in Roman, where he warns that you have to "yield your members as instrument of righteousness" [Romans chapter 6]. Because the works (and equally the passivity which is always an interaction with the outside world ruled by the prince), as said also by many Reformers, are the effect of the faith through which faith emerges and is effectual in this world.
So is the worry of God the fact we can influence a material world with material actions, a world destined to be judged and which is the reign of Satan? There is not the material effectual action the one wanted by God, but the coherence, to be not partakers of the evil, partaker of the forces of Satan whose goal is to resist the spreading of the Gospel.
James therefore teach us to be coherent with our faith otherwise he and Paul would be in opposition and all the pharisees would have gone in Heaven. But just the obsession on the works, which can be also without faith or can be shaped as expression of a false simulated faked faith, is putting James against Paul. Now you know who is secretly sabotaging Paul's preach.