4 When she (the Tetrad) had spoken these things, Aletheia looked at him, opened her mouth, and uttered a word. That word was a name, and the name was this one which we do know and speak of, viz., Christ Jesus. When she had uttered this name, she at once relapsed into silence. And as Marcus waited in the expectation that she would say something more, the Tetrad again came forward and said:— You have reckoned as contemptible that word which you have heard from the mouth of Aletheia. This which you know and seemest to possess, is not an ancient name. For you possess the sound of it merely, while you are ignorant of its power. For Jesus (᾿Ιησοῦς) is a name arithmetically symbolic, consisting of six letters, and is known by all those that belong to the called. But that which is among the Æons of the Pleroma consists of many parts, and is of another form and shape, and is known by those [angels] who are joined in affinity with Him, and whose figures (mightinesses) are always present with Him.
Source: Adversus haereses (New Advent)