 Blake's indignation at his subject matter is evident from the second line as he is talking about seeing "what I had never seen".He says he has "never" seen it although he must have grown up all his life being very aware of the Church's attitude towards sexuality.It can then perhaps be inferred that he is speaking from the point of view of innocence who has just entered the world of experience and is in a state of shock and sadness at how his previous freedoms have been blocked and squashed by the Church.