Does it make the opposite clear, that faith with nothing else is all that is needed?
It explicitly says the opposite, actually. According to some people’s interpretations, it does, but the Letter of James says:
“What good is it, my brothers, if someone says he has faith but does not have works? Can that faith save him? […] So also faith of itself, if it does not have works, is dead.”
Dead faith is still faith nonetheless. James refers to works being the evidence of faith. Works have nothing to do with salvation according to the New Testament.
Wrong.
Ephesians 2:8-10
8 For by grace are ye saved through faith; and that not of yourselves: it is the gift of God:
9 Not of works, lest any man should boast.
10 For we are his workmanship, created in Christ Jesus unto good works, which God hath before ordained that we should walk in them.
Christians are supposed to do good works, but it isn’t what “saves” them.