St Epaphroditus was one of the Apostle Paul's closest assistants and companions. St. Paul sent him to the Christians of Philippi, and he is mentioned in an epistle: I thought it necessary to send you Epaphroditus, my brother and coworker and fellow soldier, your messenger and minister to my needs... he was sick and near to death; but God had mercy on him, and not only him but also on me, lest I should have sorrow upon sorrow... Receive him in the Lord with all joy; and honor such men, for he almost died for the work of Christ, risking his life to complete your lack of service to me (Phil 2: 25-30).
Apostles of the 70 were chosen and sent by the Lord Jesus Christ Himself to preach. They were chosen some time after the selection of the Twelve Apostles (Luke 10:1-24). All seventy are commemorated by the Church on January 4th.