If you are describing a gospel supposedly written by the apostle Thomas, it was rejected by the church fathers many centuries ago.
That the "Church Fathers" excluded the Gospel of Thomas from the Canon says nothing about its spiritual truth or authenticity .They excluded Thomas because it reveals a very different picture of Jesus' teachings than the one they were trying to foist off on people.
Thomas also provides no basis for the establishment of a church hierarchy,which was unacceptable to a group of men who were setting up a hierarchy in which they would have the authority.
Does it contain something that you think is terribly important to be included in the canon of scripture?
Yes.
Jesus said:"I am not your master. Because you have drunk, you have become intoxicated from the bubbling spring which I have measured out." Logion 13
Jesus said:" He who will drink from my mouth will become like me. I myself shall become he, and the things that are hidden will be revealed to him." Logion 108
His disciples said to him, " When will the Kingdom come?
Jesus said," It will not come by expectation. It will not be a matter of saying "Here it is" or 'There it is'. Rather, the Kingdom of the Father is spread out upon the earth and men do not see it."