We don't have synonyms for gospell yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are gospel, Gospel and gospels.
(n) :
Obsolete spelling of gospel. [The first section of the Christian New Testament scripture, comprising the books of Matthew, Mark, Luke and John, concerned with the birth, ministry, passion, and resurrection of Jesus.]
(n) :
Obsolete spelling of gospel. [The first section of the Christian New Testament scripture, comprising the books of Matthew, Mark, Luke and John, concerned with the birth, ministry, passion, and resurrection of Jesus.]