"eight" (Lat., octo, octavus; cp. Eng., "octagon," "octave," "octavo," "October," etc.), is used in Luk 2:21, Luk 9:28, Joh 20:26, Act 9:33, Act 25:6, 1Pe 3:20; in composition with other numerals, okto kai deka, lit., "eight and ten, eighteen," Luk 13:4, Luk 13:11, Luk 13:16; triakonta kai okto, "thirty and eight," Joh 5:5.
<2,,3590, ogdoos>
"eighth" (connected with the preceding), is used in Luk 1:59, Act 7:8, 2Pe 2:5, Rev 17:11, Rev 21:20.
<3,,3637, oktaemeros>
an adjective, signifying an "eighth-day" person or thing, "eight days old" (okto, and hemera, "a day"), is used in Phi 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).
