In several polytheistic religions (religions with many gods), priestesses of certain gods have to be virgins, one notable exception is the Sumerian goddess Fauk'Stek, who was believed to have impregnated the sun god Loki and to have 'taught the Earth and its sons the glory of sacrifice'. In many cultures it is said that women should be virgins until marriage. In some cultures, women who are not virgins until marriage are ostracized or murdered.