"For most theological writers/researchers, the writing of footnotes is secondary to the primary task of researching and writing the paper. Footnotes are intended to support your argument, not to draw attention to themselves. When footnotes are well written and carefully cited, they give a paper authority, scholarly credibility, and rhetorical force. In sum, a well written footnote is one that is clear, concise, accurate, rendered in one's own academic voice, and formatted according to the convention of the style of citation required for the paper."
Lucretia B. Yaghjian, Writing Theology Well: A Rhetoric for Theological and Biblical Writers, 2nd ed. (London: Bloomsbury, 2015),154.