Ezekiel 44:21-22

Moreover the priests were not to drink wine before they came into the inner court (cf. Leviticus 10:9), nor were they to marry a widow or a divorced woman. They could only marry virgin Israelite women or the widows of former priests. Under the Mosaic system these marrying restrictions bound only the high priest (cf. Leviticus 21:7; Leviticus 21:14), but under the millennial system they will apply to all Zadokite priests.