The holy oil of the sick is a sacramental oil used in Catholic and Eastern Orthodox traditions during the anointing of the sick (or the last rites). This oil, also referred to as the oil of the infirm, is believed to have healing properties and is used as a symbolic representation of God's mercy and grace. Synonyms for the holy oil of the sick might include sacred oil, anointing oil, consecrated oil, or oil of blessing. Regardless of its name, the holy oil of the sick plays an important role in the spiritual and physical healing of those who are ill or nearing the end of their lives.