The Zend-Avesta is the scripture of the religion that Zarathustra, known to the Greeks as Zoroaster, taught in ancient Iran. Its largest book, the Vendidad, is cast as a dialogue: Zarathustra puts questions to Ahura Mazda, the wise lord, and Mazda answers. These selections, translated by James Darmesteter, gather the creation account, the legend of the first king Yima, the laws of the earth, contracts, purity, and a set of hymns and prayers.
At the center is a vision of two powers. Ahura Mazda creates good lands and good things; against each, Angra Mainyu, the spirit who is all death, sets a counter-creation of cold, locusts, sin, witchcraft, or disease. The whole of existence is staged as this struggle, and the believer's task is to take the side of the wise creator. Zoroaster taught that life has two parts, one on earth and one beyond the grave, and that each person is rewarded or punished after death according to deeds.
Much of the Vendidad is a code of conduct and purity. It praises agriculture and the care owed to useful animals, especially the dog, the guardian of home and flock. It treats the breaking of a contract or the refusal to repay a loan as theft and sin, binding even a person's kin in the guilt. Above all it guards the purity of fire, water, and earth. Because a corpse carries the pollution of death, the dead are not buried but exposed, and detailed penances and cleansing rites restore anyone who has been defiled.
The earth itself is given a voice and a moral weight. It feels happiest where the faithful build a household, raise crops and herds, and keep the ground clean; it grieves where corpses lie buried and where the wife and children of the faithful are dragged into captivity. To the one who tills it the earth promises plenty, like a bride bearing children; to the one who lets it lie idle it promises only begging at the stranger's door. Sowing corn is named as the very food that sustains the religion.
The closing hymns turn from law to worship. They address the Fire as the son of Ahura Mazda, the Bountiful Immortals who stand about the creator, the waters, the rain that heals, and the light of sun, moon, and stars. Running through all of it is the same ethic, summed in the prayer for holy men who think good thoughts, speak good words, and do good deeds. The Zend-Avesta asks its reader to choose, in ordinary acts of labor, honesty, and care, the side of life against the side of death.