{I protest by that glorying in you} (
(8820)t(886e) humeteran
kauch(8873)in). No word for "I protest." Paul takes solemn oath by
the use of 
(885c) (common in Attic) with the accusative. Only here
in N.T., but in LXX ( Ge 42:15f. ). For other solemn oaths by
Paul see  2Co 1:18,23  11:10f.,31  Ro 9:1 . For kauch(8873)is see
on 氣Th 2:19|. The possessive pronoun (humeteran) is objective
as em(886e) in  1Co 11:24 . {I die daily} (kath' h(886d)eran
apothn(8873)k(935c)). I am in daily peril of death ( 2Co 4:11  11:23  Ro
8:36 ).