Crown of Thorns healing oil
While in the course of his Passion, Jesus suffered various wounds, such as those from the crown of thorns and from the scourging at the pillar, medieval popular piety focused upon the five wounds associated directly with Christ’s crucifixion, i.e., the nail wounds on his hands and feet as well as the lance wound which pierced his side.
According to three of the canonical Gospels a woven crown of thorns was placed on the head of Jesus during the events leading up to the crucifixion of Jesus. It was one of the instruments of the Passion, employed by Jesus’ captors both to cause him pain and to mock his claim of authority. It is mentioned in the gospels of Matthew (27:29), Mark (15:17), and John (19:2, 5) and is often alluded to by the early Church Fathers, such as Clement of Alexandria, Origen, and others.
Tradition of oils
The tradition of anointing with sacred oil is very old indeed. It is used in sacraments and also as a devotional practice. The sick person is invited to apply oil on the part of their body they want healed. As they do so, they are asked to pray to whomever the oil is dedicated to. The Irish blessings oils do not have miraculous power. It is God who has the power to heal. Applying the oil while praying are important ways for us to express our faith in God’s power. Moreover, by doing so we place our trust in God.