Jas 5:14 Is any sick among you? let him call for the elders of the church; and let them pray over him, anointing him with oil in the name of the Lord:
Jas 5:15 And the prayer of faith shall save the sick, and the Lord shall raise him up; and if he have committed sins, they shall be forgiven him.
Someone I know saw this done with an infant in a church once. The infant had a life threatening heart defect and had a risky operation scheduled. The church had never attempted this faith healing before but decided to perform it in faith when requested, including the anointing with olive oil. When the baby was taken in for a checkup prior to surgery, they were found to be perfectly healthy.