Celtic, Germanic and Slavic religions are recorded much later, and much more fragmentarily, than the religions of classical antiquity. They nevertheless show substantial parallels to the better-attested religions of the Iron Age. In the case of Germanic religion, the practice of prayer is reliably attested, but no actual liturgy is recorded from the early (Roman era) period. An Old Norse prayer is on record in the form of a dramatization in skaldic poetry. This prayer is recorded in stanzas2 and3 of the poem "Sigrdrífumál", compiled in the 13th century "Poetic Edda" from earlier traditional sources, where the valkyrie Sigrdrífa prays to the gods and the earth after being woken by the hero Sigurd.