{Order} (	agmati). Old military term from 	ass(935c), to
arrange, here only in N.T. Each in his own division, troop, rank.
{At his coming} (en t(8869) parousi(8369)). The word parousia was the
technical word "for the arrival or visit of the king or emperor"
and can be traced from the Ptolemaic period into the second
century A.D. (Deissmann, _Light from the Ancient East_, p. 368).
"Advent-coins were struck after a parousia of the emperor." Paul
is only discussing "those that are Christ's" ( 3:23  Ga 5:24 )
and so says nothing about judgment (cf.  1Th 2:19  3:13  4:15  5:23 ).