This work explores the theological defences conceived by the Egyptians at Thonis-Heracleion to guard the Canopic gate, which in the Saïte period was the main entrance to the port of Thonis-Heracleion, the entry-point to Egypt for foreign vessels. The divine forces, including Khonsu-Thoth and Neith, were deployed alongside military forces that were also located at the Canopic gate. The temple to Khonsu-Thoth, Lord of the Gezirah, was dedicated by Amasis, and also served to legitimate the power of the Saïte kings. This study brings together a range of material evidence for these theological defences.