Trimorphic Protennoia or Three Forms of First Thought is a Sethian Gnostic text from the New Testament apocrypha. The only surviving copy comes from the Nag Hammadi library (Codex XIII). The text describes three descents using the voice of Barbelo in first person. The voice is the source of life, knowledge, and the first thought. The voice is said to have three names, three masculinities, and three powers, and it is described as androgynous. It explains that Sophia descended to help counter the plan of the demon Yaldabaoth and the archons. The speaker invites the reader to enter the high perfect light and receive glory, enthronement, and baptism. Summary The First Descent Speaking in first person, the text starts by describing the speaker as the first thought, a movement in all things, and the source of life and knowledge. The speaker is called by three names, and is invisible yet able to reveal itself. The voice that comes from the speaker's thought is said to exist as three permanences: the father, the mother, and the son. The voice is a rich and glorious speech with three masculinities, powers, and names. The speaker descended into the underworld and shone down on the darkness and through the voice, knowledge comes. The Son, who is the Word, revealed the everlasting and preached to those in darkness and in the abyss, teaching ineffable mysteries to those who became children of the light. The voice is described as having three shapes in the manner of a triad, secretly in silence of the ineffable one. The text continues by describing the creation and establishment of the eternal realms by the perfect son, the anointed, and his glory. The great light Eleleth (a luminary) says that he is king, and a great demon named Yaldabaoth, who took power from Sophia, appears. Sophia then reveals her voice secretly and comes down to the world of mortals to counter the plan of the demon. The demon creates a human being in Sophia's likeness, but it is a decree of his annulment. Sophia comes down to chaos and empowers her own, and reveals herself to the children of light, who are her portion. She breaks the bonds of the underworld demons and informs the children of light how to return to where they first were. Sophia is the first to descend for her portion, which is the spirit in the