Nine is a number of completion (so is Ten, but we'll get to that). It is the number when everything that's been learned or accomplished is integrated, and we can see it all as one, as the truth.
Like the Hermit, who connects to the nines, these are cards where we return to ourselves, as only we, ourselves, have more to teach us. We look at what we've done, earned, gained, and we think about what more we might do to make our lives (or the suit) complete. We shine a light on all we've accomplished to discover what might still be missing.
Nines are among the most powerful cards, usually granting the querent what it is they, like the Hermit, are seeking.
Learn the Nines meaning in reversal in our reversed card meanings.