1511 The Church believes and confesses that among the seven sacraments there is one especially intended to strengthen those who are being tried by illness, the Anointing of the Sick:The type of miracle we see most often in scripture is the healing of the sick. We don't expect, of course, that today the annointing of the sick will necessarily heal people physically. The primary purpose of the sacrament is to heal and prepare the soul for possible death, but we may also hope for physical healing.
This sacred anointing of the sick was instituted by Christ our Lord as a true and proper sacrament of the New Testament. It is alluded to indeed by Mark, but is recommended to the faithful and promulgated by James the apostle and brother of the Lord.
1512 From ancient times in the liturgical traditions of both East and West, we have testimonies to the practice of anointings of the sick with blessed oil. Over the centuries the Anointing of the Sick was conferred more and more exclusively on those at the point of death. Because of this it received the name "Extreme Unction." Notwithstanding this evolution the liturgy has never failed to beg the Lord that the sick person may recover his health if it would be conducive to his salvation.
1508 The Holy Spirit gives to some a special charism of healing so as to make manifest the power of the grace of the risen Lord. But even the most intense prayers do not always obtain the healing of all illnesses. Thus St. Paul must learn from the Lord that "my grace is sufficient for you, for my power is made perfect in weakness," (2 Cor 12:9) and that the sufferings to be endured can mean that "in my flesh I complete what is lacking in Christ's afflictions for the sake of his Body, that is, the Church." (Col 1:24)Christ the physician came to earth and showed us physically what he would be doing for us spiritually...healing us and making us whole. Even beyond that, he took on our suffering, and made it possible for us to join our own suffering with his so that it can become valuable as redemptive suffering.
1499 "By the sacred anointing of the sick and the prayer of the priests the whole Church commends those who are ill to the suffering and glorified Lord, that he may raise them up and save them. And indeed she exhorts them to contribute to the good of the People of God by freely uniting themselves to the Passion and death of Christ."They drove out many demons, and they anointed with oil many who were sick and cured them. (Mark 6:13)
Is anyone among you sick? He should summon the presbyters of the church, and they should pray over him and anoint (him) with oil in the name of the Lord, and the prayer of faith will save the sick person, and the Lord will raise him up. If he has committed any sins, he will be forgiven. (James 5:14-5)