The Temple of the Hand in the Water, often referred to as just The Hand (always capitalised) is the specific Dezraeli-derived religion which ultimately runs The Meritocratic Republic of the United People of the Pools. This incredibly powerful religious organisation runs all aspects of Poolish life, with their Templar soldiers acting as both police force and army and treating both enemies and dissenters with equal amounts of force. The Hand is run by six "Grand High Priests" who are the only ones above the Templars in the ranks of the church. Every aspect of daily life is overseen by The Hand, who spend much of their time spreading their extremely isolationist and xenophobic doctrine amongst the populous.
It should be noted that while they are ostensibly a Dezraeli cult, the actual god they currently worship has never been confirmed and indeed seems to have been lost to those outside of The Hand's upper echelons.
The order is entirely armed with Hand in the Water Templar Sword