Abbott-Smith Manual Greek Lexicon
τοι-γαρ-οῦν (G5105)
2 τοι-γαρ-οῦν an inferential particle , [in LXX: Jb 22:10 24:22 ( עַל־כֵּך ), Si 41:16 , al. ;] wherefore then, so therefore : I Th 4:8 , He 12:1 (Hdt., Plat., al.).†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain