Angels are messengers of God in the Hebrew Bible, the new testimony and the Quran. The term "angel" has also been extended to various notions of spiritual beings found in many other religious traditions.
Other roles of angels include shielding and guiding human beings, and carrying out God's tasks.
The theological reading of angels is known as angelology. In art, angels are frequently depicted with wings, ultimately reflecting with the descriptions in the Hebrew Bible, such as the chayot in Ezekiel's Merkabah vision or the Seraphim of Isaiah.
In the postexilic period, with the development of unambiguous monotheism, these divine beings- the "sons of God" who were members of the heavenly council- were in effect demoted to what are now known as "angels," understood as beings created by God, but everlasting and thus superior to humans.
One of these "sons of God" is "the Satan", an outline depicted in, among other places, the story of Job. The concept of angels is best understand in contrast to demons and is often thought to be influenced by the ancient Persian religious tradition of Zoroastrianism, which viewed the world as a battleground between forces of good and forces of evil, between light and darkness