From The Art and Popular Culture Encyclopedia
Tundale’s legend, in the same order as Dante, treats of Hell, Purgatory and Paradise, and it is to this poem rather than to St. Fursey’s vision that Mussafia and Corazzini emphatically assign the origin of Dante’s Divina Commedia.--"The Celtic Sources of the Divina Commedia" (1896) by Marion Mulhall
In religion, paradise is a place of exceptional happiness and delight. Paradisiacal notions are often laden with pastoral imagery, and may be cosmogonical or eschatological or both, often compared to the miseries of human civilization: in paradise there is only peace, prosperity, and happiness. Paradise is a place of contentment, a land of luxury and fulfillment. Paradise is often described as a "higher place", the holiest place, in contrast to this world, or underworlds such as Hell.
In eschatological contexts, paradise is imagined as an abode of the virtuous dead. In Christianity and Islam, Heaven is a paradisiacal relief. In old Egyptian beliefs, the underworld is Aaru, the reed-fields of ideal hunting and fishing grounds where the dead lived after judgment. For the Celts, it was the Fortunate Isle of Mag Mell. For the classical Greeks, the Elysian fields was a paradisiacal land of plenty where the heroic and righteous dead hoped to spend eternity. In Buddhism, paradise and the heaven are synonymous, with higher levels available to beings who have achieved special attainments of virtue and meditation. In the Zoroastrian Avesta, the "Best Existence" and the "House of Song" are places of the righteous dead. On the other hand, in cosmogonical contexts 'paradise' describes the world before it was tainted by evil.