Belief in angels is one of the six pillars of belief or faith without which there is no faith. Whoever does not believe in any of these pillars is not a believer (mumin). These pillars are belief in: Allah, His angels, His Books, His Messengers, the Last Day, and that predestination, both good and bad, comes from Allah.
Angels are a part of the world of the “Unseen” which we cannot comprehend. Allah has told us about them in many places in the Quran and via His Prophet Muhammad (peace and blessings of Allah be upon him). There follows a number of proven reports concerning the angels, which hopefully will make you realize the greatness of the Creator and the greatness of this religion which has told us so much about them:
However they were not sent as a man, but in the form of a man. So they are not inclluded in the commands and warning of these verses. In addition, the verses were it says oh mankind mostly commands, yet we know that they don't have free will, yet these verses give commands to jinn and mankind who have free will.
"But verily, over you (are appointed angels in charge of mankind) to watch you,
Kiraman (honourable) katibeen - writing down (your deeds)." [82:10-11]
We know from these evidence The angels have great powers given to them by Allah, including the following:
The ability to take on different forms. Allah has given the angels the ability to take on forms other than their own. Allah sent Jibreel to Maryam in the form of a man, as Allah says:
". . . Then We sent to her Our angel, and he appeared before her as a man in all respects." [19:17]
Angels also came to Ibrahim in human form, and he did not know that they were angels until they told him so. Similarly, angels came to Lut in the form of young men with beautiful faces. Jibreel used to come to the Prophet (peace and blessings of Allah be upon Him) in different forms: sometimes he would appear in the form of Dihyah al-Kalbi, a sahaabee (companion) who was very handsome, and sometimes in the form of a Bedouin. The sahaabah (companions) saw him in his human form, as is reported from ‘Umar ibn al-Khattab (may Allah be pleased with him) in the two Saheehs Al-Bukhari and Muslim). (‘Umar) said:
"One day while we were sitting with the Messenger of Allah (peace and blessings of Allah be upon him), there appeared before us a man whose clothes were exceedingly white and whose hair was exceedingly black; no signs of travel were to be seen on him, and none of us knew him. He walked up and sat down by the Prophet (peace and blessings of Allah be upon him). Resting his knees against his and placing his hands on his thighs, he said: ‘O Muhammad, tell me about Islam.’..." [ Muslim].
Many other ahadeeth (report) refer to the angels taking human forms, such as the hadeeth (report) about the one who killed a hundred, in which it says ". . . there came to them an angel in human form . . ." and the hadeeth about the blind man, the bald man and the leper.
To add to what I have said they are not included because Of what are they created?
They are created from light, as ‘Aishah (may Allah be pleased with her) reported: "The Messenger of Allah (peace and blessings of Allah be upon him) said: ‘The angels are created from light, just as the jinn are created from smokeless fire and mankind is created from what you have been told about.’" [Muslim].
They have wings Allah says (interpretation of the meaning):
"Praise be to Allah, Who created (out of nothing) the heavens and the earth, Who made the angels messengers with wings - two, or three, or four (pairs) adds to Creation as He pleases: for Allah has power over all things." [35:1]
They do not eat or drink. This is indicated by the conversation between Ibrahim, the "friend" of Allah, and the angels who visited him. Allah says (interpretation of the meaning):
"Then he turned quickly to his household, brought out a fatted calf, and placed it before them. He said, ‘Will you not eat?’ (When they did not eat), he conceived a fear of them. They said: ‘Fear not,’ and they gave him glad tidings of a son endowed with knowledge." [51:26-28]
They do not get bored or tired of remembering and worshipping Allah
Allah says (interpretation of the meaning):
"They celebrate His praises night and day, nor do they ever slacken." [21:20]
". . . For in the presence of your Lord are those who celebrate His praises by night and by day. And they never become tired (nor feel themselves above it)." [41:38]
Allah knows best.