{For if we believe} (ei gar pisteuomen). Condition of
first class, assuming the death and resurrection of Jesus to be
true. {In Jesus} (dia tou I(8873)ou). Literally, through or by
means of Jesus. It is amphibolous in position and can be taken
either with 	ous koim(8874)hentas (that are fallen asleep in or
through Jesus) like hoi koim(8874)hentes en Christ(9369) in  1Co 15:18 
and probably correct or with axei (through Jesus with God).
{With him} (sun aut(9369)). Together with Jesus. Jesus is the
connecting link (dia) for those that sleep (koim(8874)hentas
first aorist passive, but with middle sense) and their
resurrection.