G3590–ὄγδοος–ogdoos

And on the eighth day they came to circumcise the child, and were going to call him Zechariah, after his father.

ὀγδόῃ ogdoē “eighth”

"Then He gave him the Covenant of circumcision, and under this Covenant he became the father of Isaac--whom he circumcised on the eighth day. Isaac became the father of Jacob, and Jacob became the father of the twelve Patriarchs.

ὀγδόῃ, ogdoē “eighth,”

And He did not spare the ancient world, although He preserved Noah, a herald of righteousness, with seven others, when He brought a deluge on the world of the ungodly.

ὄγδοον ogdoon “one of eight”

And the Wild Beast which once existed but does not now exist--he is an eighth king and yet is one of the seven and he goes his way into perdition.

ὄγδοός ogdoos “an eighth”

the seventh chrysolite, the eighth beryl, the ninth topaz, the tenth chrysoprase, the eleventh jacinth, the twelfth amethyst.

ὄγδοος ogdoos “eighth”