'Relying' in the Bible

since indeed it is one [and the same] God who will justify the circumcised by faith [which began with Abraham] and the uncircumcised through [their newly acquired] faith.

And why not? Because it was not by faith [that they pursued it], but as though it were by works [relying on the merit of their works instead of their faith]. They stumbled over the stumbling Stone [Jesus Christ].