What is Apostolic? Apostolic means like the Apostles. Thus, our doctrine or church teaching is, to the best of our understanding, the same as taught by the Apostles. Acts 2:42   And they continued stedfastly in the apostles' doctrine and fellowship, and in breaking of bread, and in prayers. 1 Timothy 4:16   Take heed unto thyself, and unto the doctrine; continue in them: for in doing this thou shalt both save thyself, and them that hear thee