One way that the Egyptian believes were visible in their art and artifacts was their belief in afterlife: they believed that people would be reunited with their body after death.
This means that their bodies needed to be preserved. This lead to the structure of Pyramids, which were meant to protect the bodies of the Pharaohs. Additionally, they developed complicated rites connected to burial, which included the decoration of the coffins: this is another way that their beliefs inspired their art.