The Twelve are sent out two by two
Matthew 10; Mark 6:7–13; Luke 9:1–6
Jesus sent the Twelve out in pairs to the towns of Israel, giving them authority to heal and to cast out demons, and telling them to take no money or spare clothing.
Heal the sick, cleanse the lepers, and cast out demons. Freely you received, so freely give.
Matthew 10:8 (World English Bible)
He warned them that they would be like sheep among wolves, and promised that the Spirit of their Father would give them words when they were brought before rulers. They went out, preached repentance, and healed many.
Dating notes
Ussher: AD 31. The month shown is estimated from the order of events in Ussher's harmony, so that events of the same year appear in sequence.