Beloved disciples, you must meditate profoundly on the Unity of Life, on the Great Alaya of the universe, on the invisible world, on the parallel universes of the superior dimensions of space.
Concentrate your thought on the Walkirias, Gods of fire, air, water, and earth.
AGNI is the God of fire. PARALDA is the God of air. VARUNA is the God of water. GOB is the God of the element earth.
Through meditation is how you can enter into contact with the Gods of the elements.
You must trace the Rune Hagal on a blank paper, then afterwards, concentrate your mind on any of the four principal Gods of the elements. Call upon them so they can help you when it is necessary.
Samael Aun Weor
Esoteric Treaty of Runic Magic, Chapter 37