What you will need:
Oil of frankincense, incense, charcoal, goblet of wine or beer, fruit juice, or water, two white candles, a statue or picture of the Neter (optional but very useful).
Don your white robe and tie a red cord around your waist. This will be in respect of Isis, the Neter you will be invoking. Anoint wrists, temples, and throat with oil of frankincense. Light candles. Prepare charcoal and add incense as required. Fill goblet with liquid, raise it in salutation to the goddess, and place it back on your altar.
Meditate for a while on the hieroglyph of her name:
Sit comfortably on an upright chair and commence rhythmic breathing for four to six rounds.
Say the temple prayer to the deity:
Pause before beginning the invocation. Visualize each word as you utter it. Breathe it into life, invest it with passion. Each is a rhythmic element combining to form a powerful symphony. Imbue your call with such beauty that the goddess cannot help but to respond.
Pause and contemplate this scene and say:
"I am she who triumphed over death to bring my beloved husband-brother back to life. I am mistress of the sun and daughter of the lord gods. I am wife of a king and carried the young god within me to this sacred place and gave birth to him. I am Isis, great mother of gods, and Queen of the Mammisi. Look upon me as I truly am, unfettered by your hopes and fantasies. I have lingered in the shadows watching you shape and unshape me, age after age, an empty image not worthy of my name.
"Remember this, my child. Through me shall you find the greater mysteries of life. I speak of many things that are known and unknown, my breath to your breath, my heart to your heart. Take up the goblet and drink heartily the elixir of life. Feel the serpent of knowledge as it entwines itself around your arm."
At this stage, you may want to take some personal time with Isis for meditation, quiet introspection, conversation, or whatever you need to help build and foster your relationship with the Neter. The important part of this stage is to open your heart to her, and enjoy her presence.
Take the goblet from the altar and say:
Move closer to the incense and say:
"If the essence and perfection of all good are comprehended in the goddess, and if I adhere to a more excellent nature, I will always obtain a union with her, the contemplation of truth, and the possession of intellect. For a knowledge of all the gods is accompanied with a conversion to, and knowledge of, myself."
Stand silently, and think about what you have uttered and what has been said to you. Think of what you have been privileged to see. Close the shrine, if you have an enclosed shrine.
Blow out the candles. Remove the foodstuff; you may leave the water. Back away from your shrine/altar and bow. Close your eyes and, when you open them, say these words:
"I shall always remember that all deities are true and valid emanations of the Supreme One, and will not allow myself to become so obsessed with one aspect that I denigrate others, for this is not true love of Deity."
From Invoking the Egyptian Gods, by Judith Page and Ken Biles.