Her name is the Greek form of an ancient Egyptian word for throne.
Isis was initially an obscure goddess who lacked her own dedicated temples until she became the most important deities of ancient Egypt. Originally known as Au Set in Egypt she was called the "Oldest of the Old." Isis is one of the earliest and most important gods in ancient Egypt, incredibly intelligent and powerful. She was regarded as the feminine counterpart to Osiris. As a winged goddess she may represent the wind.
Isis was a great enchantress, the goddess of magic which she then brought into the world of man. Isis joined magic, wisdom and the laws of nature to make the fundamental element of Isian magic. Isis was also a compassionate Goddess who also introduced medicine to the world. Sirius, the Dog Star is the prime star of Isis, and the place where her soul was considered to reside by the Egyptians.
In later periods the worship of Isis spread from Egypt to Greece and subsequently spread throughout the Roman Empire, and there is even a temple of Isis in Pompeii. Her cult now is worshipped from England to Afghanistan. She is still revered by pagans today.
Isis is a benevolent goddess who usually answers prayers. Take care on calling Isis for her special magic is most profound and should be treated as such. Therefore, invoking this influential deity must be done with great reverence and an open heart. Calling on her for blessings, love, romance, friendship, healing, protection, solace, or strength during trying times, Isis manifests in sea mist, sunlight, and moonlight.
She is also most powerful in matters of transformation and change. You can invoke her anywhere and at any time but depending on the invocation, noon, sunset and midnight and dawn are all powerful times for her. Places where rivers and streams meet the sea are best to invoke her sea goddesses aspect. When invoking Isis it is good to use white, dark-blue or orange candles with an incense that is heavy with an earthy scent like musk. Offerings to Isis can include incense like myrrh, honey, tree fruit, rosewater or sweet dark wine.