Agreed with observations by others that there is significant overlap between the first two existing reasons:
Questions about biblical topics but without a specific Bible passage are off-topic as hermeneutical methods cannot be applied when no text is referenced.
Questions including a biblical text but that are not seeking an answer about ① the history of that biblical text itself or ② the meaning of that biblical text either in context or through a process of arriving at a particular interpretation of it are off-topic.
Also agreed with dannii's suggestion of merging these two and reusing the other. I'd tweak his and go with something like:
Questions about biblical text interpretation are off-topic which: A) primarily seek current-day application of texts, or B) do not arise from a specific text in its own contemporary context.
Questions about biblical or theological topics are off-topic if they are not seeking an answer about interpretation or the manuscript history of a specific biblical passage, unless it's a question about the field of hermeneutics (hermeneutical approaches).
For the first one, I think it's helpful to have some aspect of 'history' - and for me this hones in on either the manuscript history or the interpretative history of a text.
This second one could use some refining, I think - it would be good to have clearer boundaries around what it means for a question to arise from a text, as I wrote on separately a few weeks ago (but have not had time to follow up on since). It's difficult to be broad enough to allow well-intentioned questions and yet tight enough to restrict questions that are shoe-horned into a text.