{They had not had sin} (hamartian ouk eichosan).
Conclusion of condition of second class without an because
context makes it clear (
un de) without it (Robertson,
_Grammar_, p. 1013). The imperfect active indicative with -osan
instead of -on (also in verse  24 ) as common in the LXX, and
occurs in the papyri and the inscriptions and the Boeotian
dialect. {Excuse} (prophasin). Old word ( 1Th 2:5 ) either from
prophain(935c), to show forth, or proph(886d)i, to speak forth. Mere
pretence, in John only here and verse  24 .