The three main Gods of ancient Egypt were Osiris, Isis and Horus.
The afterlife was a main concern of the Egyptian civilization.
Ra, Osiris, and Horus.
The afterlife
polytheism, and the believe in the afterlife
Khufu, the pharaoh who built the Great Pyramid of Giza, was known to have strong religious beliefs centered around the worship of the sun god Ra and the idea of an afterlife. He likely participated in traditional Egyptian religious practices such as offerings to deities and the belief in the importance of rituals for ensuring a successful transition to the afterlife.
There are more than five Egyptian gods, but five main ones would be Ra, Atum, Osiris, Horus, and Set.
Ra, thoth, hapy, osiris, isis
Ancient Egyptians had more festivals for their gods and goddesses (such as the flooding of the Nile for Osiris) than they had rituals. However the ancient Egyptians believed in magic and had such rituals and spells which they invoked by the power of their gods and goddesses. A well known ritual was performed by the priests of Anubis and called "the Ritual of Life" which was believed to prepare the deceased for the afterlife.
Egyptian Art speaks to us about their deep love for life and their religious beliefs. It glorifies nature in all it's forms. However the main focus is on the Gods and Pharaoh,who was a living God. The belief in afterlife is all present and is the very reason for most of the art which has found.
The three main gods are Brahma (the creator), Siva or Shiva (the destroyer) and Vishnu (the preserver).
Thor, Odin, and Freya are some of the most known gods. There are no three main gods like their are in Greek Mythology.
As well most things, this depends upon the timing and place within Egypt. Currently, the Egyptian government endorses certain religions and does not uphold the rights of others; while ancient Egyptian religion at certain times believed in three main "city patron" gods and many lesser gods and goddesses along the Nile, both of foreign origin and native.