I see that Dannii has already provided quite a lot of feedback on this point, and so I don't want to reiterate too much of that. I'd emphasise that Comments are not the primary or only form of feedback, and so depending on the case you may choose any of the following, in order of typical priority:
- Vote on answers - indicate whether each is useful or not.
- Write an alternative answer yourself - this is the best way to express your view, and then let the community vote on it.
- Add a comment - provide specific feedback that's clear, patient, respectful and constructive, in line with the SE Code of Conduct. Typically this should target specific points made by the answer, with a view to gaining clarifications or encouraging the author to edit/refine their answer further, not to debate the merits of their worldview.
- Suggest edits to answers - minor improvements in line with author's intent.
- Use the Chat function - if you are interested in deeper engagement with other users beyond simple clarifications, or if the clarifications appear to be extending past 4/5 comments, consider starting a new Chat with them instead.
I understand that the guidelines can appear a little vague in isolation from real cases, but this site isn't here for the purpose of enforcing rules - the purpose is to engage in Q&A as a community of individuals interested in hermeneutics and exegesis of biblical texts. The whole system of building rep is there to encourage that process of building up experience interacting with the community to learn how to use new privileges appropriately.
For this reason, I'd encourage you to consider the way experienced members of the community use the Comment feature, and learn from them. This may help put some of the more abstract guidelines into practice and understand how it all fits together.
The experience of users and the community is important - when members of the community write an answer, they should expect one or two specific comments that can be addressed or clarified briefly. But nobody should be chased with ten or twenty comments trying to demolish their underlying worldview - if others disagree with everything that's written, they really should just be downvoting and posting their own answer instead. Or opening a new Chat with the user, where they can explain their views to you in greater detail.
At the end of the day the clue is in the name - when you leave a 'Comment', that's exactly what it's supposed to be: a short, simple interaction. Comment, move on. If you're seeking or expecting lengthy engagement on a matter, that's a 'Chat'.