“ Then at some point, their interpretation that leads to such truth must be infallible“
Thanks, but I disagree with your understanding.
So its possible to have an fallible interpretation that leads to the Truth?
Like those believers who are given the “indwelling spirit
“ as you call it who state that infant baptism is True teaching, and those other believers who are given the “indwelling spirit” who state that infant baptism is False teaching?