Strong's G3766 — οὐκοῦν (adverb)
oukoun (ouk-oun`) adv.
1. is it not therefore that
2. (affirmatively) hence or so
[from G3756 and G3767]
KJV: then 
Root(s): G3756, G3767 
Hebrew root: οὖν
Occurrences: 1