letters, and they are Netzaḥ and Hod [righteous-ones], – the mighty-ones (eiytanim) of the world. And behold, EiYTaN (mighty) in a switch of letters, is TaNYA∞‘we-have-learnt’, which assists Him in exile, and upon which it is stated: (Num. 24:21)... mighty is your dwelling place, and your nesting which you have placed in the rock.
Netzach and Hod as the Righteous Pillars of the World
Tikkunei Zohar 87:1