{Rejoiceth not in unrighteousness} (ou chairei). See  Ro
1:32  for this depth of degradation. There are people as low as
that whose real joy is in the triumph of evil. {But rejoiceth
with the truth} (sunchairei de t(8869) al(8874)hei(8369)). Associative
instrumental case after sun- in composition. Truth personified
as opposed to unrighteousness ( 2Th 2:12  Ro 2:8 ). Love is on
the side of the angels. Paul returns here to the positive side of
the picture (verse  4 ) after the remarkable negatives.