Sha\'ar HaPesukim, or the "Gate of Verses," is the fourth of eight "gates" of the writings of the Arizal.
But whereas the first three levels provide more down-to-earth explanations, basically background information to the verses, Sod offers a far deeper and more profound understand.
Not surprising, it is on Tanach itself, Torah, Prophets, and Writings, all of which can be learned on four increasingly more insightful levels-Pshat, Remez, Drush, and Sod-simplicity, hints, exegetics, and Kabbalah.
Sha\'ar HaPesukim, or the "Gate of Verses," is the fourth of eight "gates" of the writings of the Arizal