In various religions and belief systems, there are references to angels who are thought to inhabit or guard the heavens. While the specific number and names of these angels can vary, there are several references to four specific angels in different contexts.

In Christianity, the four angels that are frequently mentioned are the archangels Michael, Gabriel, Raphael, and Uriel. Each of these angels has a distinct role and purpose, and they are often associated with different elements or directions.
Michael is perhaps the most well-known of the archangels, and is often depicted as a warrior or protector. He is typically associated with the element of fire, and is believed to have a role in defending the faithful from evil and guiding souls to the afterlife.
Gabriel is often associated with messages and communication, and is believed to have been the angel who announced the birth of Jesus Christ to Mary. He is often depicted holding a trumpet, which symbolizes his role as a messenger of God.
Raphael is associated with healing and is believed to have the power to heal both physical and emotional wounds. He is sometimes depicted holding a staff or walking stick, which is said to represent his ability to guide and heal those who are lost or in need of direction.
Uriel is sometimes referred to as the angel of repentance or the angel of salvation. He is often associated with the element of earth, and is believed to be a guide for those who seek to repent and return to God.
In other religious and spiritual traditions, there are references to different sets of four angels. In some Jewish traditions, for example, the four archangels are said to be Michael, Gabriel, Raphael, and Uriel, while in others they are identified as Michael, Gabriel, Uriel, and Metatron.
In Islam, the four angels are sometimes referred to as the archangels of the four corners, and are believed to guard the four corners of the earth. Their names are often given as Israfil, Michael, Jibril, and Azrael.
In other spiritual and mystical traditions, there are references to different sets of four angels or archangels, each with their own unique qualities and attributes. Some traditions also assign different colors or symbols to each of the four angels, which are used in meditation or prayer.
Ultimately, the specific identity and attributes of the four angels in heaven can vary depending on the cultural, religious, or spiritual context in which they are referenced. However, the common thread across many traditions is the belief that these angels serve as guides, protectors, and messengers of the divine, helping to guide humanity on its spiritual journey.