The Gospel of Truth from the Nag Hammadi codices

The text describes gnosticism's idea of creation, and the origin of evil as being a by product of the fall of Sophia (thus becoming Norea), since ignorance breeds fear and fear is a fog in which error gains power. It then describes Jesus as having been sent down by God to remove the ignorance, but error (personified) gets angry at this, and nails Jesus to a tree.

It describes Jesus acting as a teacher confounding the other scribes and teachers, and asserts they were foolish since they tried to understand the world by analysing the law. It also proceeds to describe how it is knowledge which grants salvation, which constitutes eternal rest, describing ignorance as a nightmare.

Having next described the parable of the good shepherd, in an esoteric manner, it then describes how feeding the hungry and giving rest to the weary is to be understood as feeding spiritual hunger, and resting the world weary.

This is followed by a parable about anointing, the meaning of which is obscure, but may be connected with the way in which a sealed amphora meant it was full, a metaphor for knowledge - having the final "seal" in the jigsaw and you understand, but without it, the scraps of understanding you have put together can still be easily undone:

But those whom he has anointed are the ones who have become perfect. For full jars are the ones that are usually anointed. But when the anointing of one jar is dissolved, it is emptied, and the reason for there being a deficiency is the thing through which its ointment goes. For at that time a breath draws it, one by the power of the one with it. But from him who has no deficiency no seal is removed, nor is anything emptied. But what he lacks the Perfect Father fills again.
Aside from a final description of achieving rest by gnosis, the remainder of the text concerns a treatise on the connection between the relationship between the Son and the Father, and the relationship of a name to its owner. The prime example of this is the phrase it uses that the name of the Father is the Son, which is to be understood in the esoteric manner that the Son is the name, rather than as meaning that Son was a name for the Father..................this is taken from Wikipedia