Abbott-Smith Manual Greek Lexicon
διό-περ (G1355)
2 ** διό-περ conjunct. ( διό , q.v., strengthened by πέρ ), [in LXX: Jth 8:17 ; II Mac 5 * ;] for which very reason : I Co 8:13 10:14 .†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain