The Anointing of the Sick is intended to strengthen those who are elderly or seriously or chronically sick; to connect them to our community of believers, and to make God’s healing power known. The Anointing of the Sick is always available from one of our priests.
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.
— The Catechism of the Catholic Church