{Not for uncleanness, but in sanctification} (epi
akatharsi(8369) all' en hagiasm(9369)). Sharp contrast made still
sharper by the two prepositions epi (on the basis of) and en
(in the sphere of). God has "called" us all for a decent sex life
consonant with his aims and purposes. It was necessary for Paul
to place this lofty ideal before the Thessalonian Christians
living in a pagan world. It is equally important now.