And if a brother or sister be naked, and want daily food:  And one of you say to them: Go in peace, be ye warmed and filled; yet give them not those things that are necessary for the body, what shall it profit?  So faith also, if it have not works, is dead in itself.  But some man will say: Thou hast faith, and I have works: shew me thy faith without works; and I will shew thee, by works, my faith.  Thou believest that there is one God. Thou dost well: the devils also believe and tremble.  But wilt thou know, O vain man, that faith without works is dead?
Luther would have 'deleted' this epistle, too, along with the Deuterocannon. but maybe he thought he would be pushing his luck.