Oxford English Dictionary: Scripture
etymology: < classical Latin scrīptūra . . . written matter, written recordI. Sacred writings, and related senses. 1. Frequently with capital initial. The sacred writings of a religion. a. The sacred writings of Christianity contained in the Bible; the Old and New Testaments; the Bible. Also modified by holy.
Scripture > Religious texts (also known as scripture, or scriptures, from the Latin scriptura, meaning "writing") are texts which religious traditions consider to be central to their practice or beliefs.
(followed by references to individual religions' scriptures, but no discussion of generic qualities.
life stories / myths concerning divine figures
life stories / myths concerning saints, followers
songs, psalms, hymns?
These genres may contain elements of fiction, e.g. narrative, dialogue, a narrator, etc., but probably impolite to call scriptures "fiction."