An emphasized form of the personal pronoun of the second person; used as a subject commonly with thou; as, thou thyself shalt go; that is, thou shalt go, and no other
It is sometimes used, especially in the predicate, without thou, and in the nominative as well as in the objective case
Thyself is an old-fashioned, poetic, or religious word for `yourself' when you are talking to only one person. Love thy neighbour as thyself. yourself