Matthew lists the 12 disciples that Jesus called and also appointed as Apostles. They are given authority to heal the sick, cast out demons and even raise the dead. He then gives them lengthy instructions, some of which will apply right away and some they rely on after he ascends into heaven and the New Testament church age begins.

Matthew 10

When he had called his twelve disciples, he gave them power against unclean spirits, to cast them out, and to heal all manner of sickness and all manner of disease.