»23 relates to biblic genesis«

You dive into the numerology of the 23 chosen to repopulate zion (16 women, 7 men). This is biblical reference: Genesis 7: 16 - 23:

Genesis 7
16 The animals going in were male and female of every living thing, as God had commanded Noah. Then the LORD shut him in.
17 For forty days the flood kept coming on the earth, and as the waters increased they lifted the ark high above the earth. 18 The waters rose and increased greatly on the earth, and the ark floated on the surface of the water. 19 They rose greatly on the earth, and all the high mountains under the entire heavens were covered. 20 The waters rose and covered the mountains to a depth of more than twenty feet. 21 Every living thing that moved on the earth perished-birds, livestock, wild animals, all the creatures that swarm over the earth, and all mankind. 22 Everything on dry land that had the breath of life in its nostrils died. 23 Every living thing on the face of the earth was wiped out; men and animals and the creatures that move along the ground and the birds of the air were wiped from the earth. Only Noah was left, and those with him in the ark.