That's just a comment written in a second or two, not a verse from the bible. No need to dissect it this deep. If this is hostile, asking "how are you" is too, implying one may be in bad shape.
When you see something that you might think is hostile, it's often more productive to give them the benefit of the doubt and presume that they intended good faith but have different conversational norms from you. In the best case, they meant well, and everything proceeds nicely. In the slightly worse case, they didn't mean well, but you've helped de-escalate, and things are back on track for a nice discussion. In the worst case, they get more blatant in their attacks, and at least you'll find out that productive discussion wasn't possible anyway. Not much downside, and lots of upside, in my experience.