Gnosis, da'ath, marif'ah, direct knowledge, comes from meditation. This is the spirit that vivifies the letter that kills.
As for a compilation of mythological texts, here are some specific works that I have found accurate and in concordance with esoteric principles:
- The Illiad, The Odyssey, and The Aeneid translated by Robert Fagles
- The Egyptian Book of the Dead translated by Evan Von Dassow and Raymound Faulkner (see specificaly Treatise of Sexual Alchemy and Cosmic Teachings of a Lama by Samael Aun Weor for more on Egyptian mysticism)
- The Mayan Popul Vuh translated by Dennis Tedlock
- Le Morte D'Arthur ("The Death of Arthur") by Sir Thomas Malory
- The Nibulunglied (I don't remember which translation I have)
As for other Norse texts, check out the Germanic
Eddas, although I don't have this text nor could offer recommendations as to a strong and accurate translation.