Luke.1.59  And on the eighth day they came to circumcise the child; and they would have named him Zechariah after his father,
Acts.7.8  And he gave him the covenant of circumcision. And so Abraham became the father of Isaac, and circumcised him on the eighth day; and Isaac became the father of Jacob, and Jacob of the twelve patriarchs.
Phil.3.5  circumcised on the eighth day, of the people of Israel, of the tribe of Benjamin, a Hebrew born of Hebrews; as to the law a Pharisee,
Rev.17.11  As for the beast that was and is not, it is an eighth but it belongs to the seven, and it goes to perdition.
Rev.21.20  the fifth onyx, the sixth carnelian, the seventh chrysolite, the eighth beryl, the ninth topaz, the tenth chrysoprase, the eleventh jacinth, the twelfth amethyst.