The Angels of the four elements are God’s servants and we should ask the Lord to send them to us so that they may help us in our spiritual work. Within in each of us are seeds of evil, and these seeds always manage to find the conditions they need to grow and expand and put obstacles in our way. This is why, when a disciple reaches a certain phase in his evolution, he is given the task of penetrating into the deepest recesses of his subconscious and, with the help of the Angels of the four elements – the Angel of earth, the Angel of water, the Angel of Air and the Angel of Fire – of burying, drowning, scattering and burning any seeds of evil that still remain within him.

Absolute purity cannot be achieved unless we do this work with the four elements. Each element has its own special properties; air can do things that neither water nor fire can do. So we must ask the Lord to grant us the help of His Angels:

‘Lord God Almighty, Creator of Heaven and earth, I beg you to send me Your servants, the four Angels. The Angel of the Earth, that he may absorb all the wastes of my physical body so that it may be capable of expressing You and that Your will be made manifest through it . The Angel of Water, that he may wash all stains from my heart and fill it with selfless love so that I may work for Your Kingdom and your Righteousness. The Angel of Air, that he may purify my intellect with an influx of wisdom and light so that I may work for Your Kingdom and Your Righteousness. Send me, Lord, the Angel of Fire, that he may sanctify my soul and my spirit, that Your Truth dwell within them and that I may work for Your Kingdom and Your Righteousness.
Amen. Amen. Amen. So be it.’

Complete Works, Book 32, The Fruits of the Tree of Life