From Greek aγγελος angelos "messenger, envoy, one that announces."
"The whole cosmos is directed, watched, and animated by a series of almost interminable hierarchies of conscious beings. Each one of them (whether they are called by one name or another, such as Dhyan Chohans, angels, or devas, etc.) have a mission to accomplish, and are messengers only in the sense that they are agents of the Karmic and Cosmic Laws. They vary in their respective degrees of consciousness and intelligence infinitely. All of them are perfect humans in the most complete sense of the word. Multiple angelical services characterize divine love. Each Elohim works within his specialty. We can and must appeal for angelical protection." - Samael Aun Weor, The Three Mountains
“In reality, angels are perfect human beings. Therefore, whosoever reaches the perfect state of human being becomes an angel. Those who claim that an angel is inferior to humans are falsifying the truth. No one can achieve the angelic state if he has not previously reached the state of perfect human being. No one can achieve the state of perfect human being if he has not previously incarnated his Soul. This is a sexual problem. The angel is born only within the true human beings.” - Samael Aun Weor, The Perfect Matrimony
“There are two types of angels: innocent angels and virtuous angels. The innocent angels are the elementals of plants, and the virtuous angels are perfect human beings.” - Samael Aun Weor, Esoteric Medicine and Practical Magic