When The Most High, who is The Divine Providence of all creation, decided to manipulate light frequencies, he/she decided to create The Divine Servitors to function as an aspect of his consciousness in the form of Angels. These creatures essentially are light/fire. Electrons, neutrons and protons as well as every cosmic particle emanate from these beings that are from the essence of The Most High. The word Angel is derived from the Greek word Angelos which means messenger. Also the word Malaak which is Hebrew means messenger as well. It is not known the age of the creation of the Universe or the Angelic realm. The Angels were created before man and woman. We do know that Angels are pure light/fire. The three Abrahamic derived faiths, Hebraic, Christian and Islamic all acknowledge Angels as well as people of various other faiths.
The Quran states: Praise be to Allah, who created the heavens and the earth, who made the Angels messengers with wings, two or three, or four (pairs): He adds to his creation as he pleases: for Allah has power over all things. Surah Faatir Chapter 35: verse 1. Although this verse is from the Holy Quran, most of the information about Angels in Islam is based on recorded Hadith, sayings of Prophet Muhammad(PBUH).
The Biblical text and pseudepegraphia elaborate more on the subject and makes it clear that Angels are pure light/fire. This is a Biblical text which adds to the aforementioned Quranic verse … Isaiah chapter 6: verse 2, Above it stood the Seraphim (flaming, burning ones): each one had six wings; with twain he covered his face, and with twain he covered his feet, and with twain he did fly. The Seraphim for the exception of the Chayot Ha Kodesh , Living Holy Creatures, they are in very close proximity to YHWH.
These spiritual beings are composed of very high light/fire vibrations. For the average sentient being to be exposed to such burning frequency of light/fire they would be disintegrated. In order to see or communicate with Angels one must be pure in spirit. If not the person must go through the Angelic light/fire purification. This is sometimes painful, though unseen by the naked eye. We have personally experienced this, my partner and I.
There are many secrets vouchsafed within creation by Angelic beings of various traditions, some of which we intend to explore on this site.
As aforementioned, angels are not limited to the three Abrahamic faiths. They can be found in various traditions under different names. For example, the Vedic tradition has Devas, the Buddhist tradition has Dakinis, the Akan tradition has Abasooms, the Yoruba tradition has Erumole, the Igbo tradition has UmuAgbala and so on, all protective matrons and patrons of these traditions.
The Universe is vast with many choices, you just have to make up your mind.