I think orthodoxy in speech and in sort of conscious mental processing is hard enough to attain. As far as orthodoxy deep down inside, it's gotta be a gift. In my former life in the pulpit, my lips may have been saying "Grace, grace, grace," but my heart was saying "works, works, works," and I would venture to guess that nearly every sin after one makes one's more or less adult commitment to Jesus involves forgetting (a) that GOD loves you; and (b)that God LOVES you; and (c) that God loves YOU!
By which I mean to say that while I have no problem with somebody saying "that argument seems heretical", if somebody says "You're a heretic," I'm just going to say, "I already copped to that and have thrown myself on the mercy of the court."
And then I'm going to punch them in the eye.
No. wait.
I'm willing to play nice, but folks have to be willing to listen to what you actually say rather than what they want to think you said.
Oy, is THAT ever a learned skill! I often think of conversation beinglike artillery must have been in the old days. You know: you fire, and then somebody says where they think your shell landed, so you adjust and fire again. It's not easy.