King James Version
Because for the work of Christ he was nigh unto death, not regarding his life, to supply your lack of service toward me.English Standard Version
for he nearly died for the work of Christ, risking his life to complete what was lacking in your service to me.Catholic Public Domain Version
For he was brought close even to death, for the sake of the work of Christ, handing over his own life, so that he might fulfill what was lacking from you concerning my service