 With the increase in polytheistic Druidry, and the widespread acceptance of Goddess worship, "The Druid's Prayer", which had been originally written in the 18th century by Druid Iolo Morganwg and emphasises the unity of the supreme Deity, had the word "God" replaced with "Goddess" in common usage.Some Druids regard it as possible to communicate with various spirits during ritual.Certain Druids in Ireland have for instance adopted belief in the Sí, spirits from Irish folklore, into their Druidic system, interpreting them as elementals.