What is this resurrection in Php 3:11?
The out resurrection from among the dead is the prize of the high calling and is for those who have remained faithful and suffered like unto the suffering of Jesus Christ. Paul is saying he is not sure if he will attain to it so as to show it is a prize for believers that suffer and remain faithful to the end and to contrast it with other hopes and resurrections taught by the apostle. In Hebrews 11 he does speak of some who attained to a better resurrection. But they were of a different administration. It is not the resurrection that is the result of believing and obtaining everlasting life. For that is by faith, and not by attainment. By 2 Timothy Paul is confident of attaining the prize and also knows his life shall soon end by the hands of his captors.