Ephesians 2, e-s. Ephesians 2.
It’s been quoted here enough that salvation is by grace through faith.
Of course, I have no idea what your definition of ‘faith’ is other than just another works-based religion.
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It is made plain in almost every epistle in the NT that salvation is through obedience, and grace is simply Yehova’s willingness to accept confession,.
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And as Paul and Peter make plain, there comes a point where he stops accepting confession that is frivolous.