In our first session for 2023, we revisit Bediuzzaman Said Nursi's main argument for Allah's existence and unity, to be found in his celebrated treatise known as, 'The Supreme Sign' ('Ayetül Kübra'). We see how the argument in this treatise functions not merely as a logical proof, but as an exercise in reflective contemplation or 'tefekkür' - a form of contemplation in which we augment our knowledge of, and acquaintance with, Allah via a deep reflection upon phenomena in the cosmos.