Is the Interpretation of Scripture a Matter of Faith?

I don't think the things orbit on crystal spheres around usi hold an opinion one way or the other on helio sentrum versus geocentrism in general. Ah, but it is interesting that when the account first came up in the galileo affair, that bellarmine did immediately point out that he didn't think that this was entirely matter of faith to appeal to some church fathers in the matter. But i don't see any passages in scripture that could be appealed to to talk about the crystal spheres. I'd be curious to see where they cite the firmament as the lowest of the spheres.