Received their formal calling by Jesus after being selected by the Zebedee brothers.  Twins were assigned to manage the multitudes.  Both were fishermen from Kheresa and were 26 years old in AD 26.  They were kind and naive; They did the tasks of servants and messengers of the apostles.  When the other apostles were unable to sleep due to excitement by Jesus' teachings, they were easy to find asleep by the fire.  The twins were blissfully ignorant of controversies over what the kingdom was and whether or not it had arrived.  They were the ones who tried to dissuade Norana, the Phoenician, from letting the Master rest.  They were the ones in charge of putting robes on the donkey on Palm Sunday and then returning the donkey to the owner.  They greatly enjoyed Jesus' entry into Jerusalem, even as the other apostles were perplexed by the events of that day.  In Jesus' admonitions to them he exempted them from remaining apostles if they wished. 
Firmly believed in the resurrection of Jesus when announced by women, including his own mother.  Both were in the appearances of Jesus.  Jesus, in his last instructions, told them to work as if they were working for God.  Returned to their homes and nets shortly after Pentecost. 
See also: UB 143:3.5.