Eighteen Eight Eighth

Eighteen Eight Eighth

1: ὀκτώ (Strong'S #3638 — Noun — okto — ok-to' )

"eight" (Lat., octo, octavus; cp. Eng., "octagon," "octave," "octavo," "October," etc.), is used in  Luke 2:21;  9:28;  John 20:26;  Acts 9:33;  25:6;  1 Peter 3:20; in composition with other numerals, okto kai deka, lit., "eight and ten, eighteen,"  Luke 13:4,11,16; triakonta kai okto, "thirty and eight,"  John 5:5 .

2: ὄγδοος (Strong'S #3590 — Adjective — ogdoos — og'-do-os )

"eighth" (connected with the preceding), is used in  Luke 1:59;  Acts 7:8;  2 Peter 2:5;  Revelation 17:11;  21:20 .

3: ὀκταήμερος (Strong'S #3637 — Adjective — oktaemeros — ok-tah-ay'-mer-os )

an adjective, signifying an "eighth-day" person or thing, "eight days old" (okto, and hemera, "a day"), is used in  Philippians 3:5 . This, and similar numerical adjectives not found in the Nt, indicate duration rather than intervals. The Apostle shows by his being an "eighth-day" person as to circumcision, that his parents were neither Ishmaelites (circumcised in their thirteenth year) nor other Gentiles, converted to Judaism (circumcised on becoming Jews).