Spiritual nature neither inherited nor taught

Why is it that there is no record of a spiritual nature being passed from generation to generation? In the Bible, Samuel had a wonderfully spiritual nature, but his sons were hopelessly immoral. Mary Baker Eddy had one son who showed no indication of spirituality. Most spiritual luminaries in the Bible left no record of progeny. Even "the root of Jesse" prophesying the coming of Christ Jesus is symbolic, not genetic - the lineage of Joseph, the husband of the Virgin Mary!

Since inherited traits are carried in genes (biology), and since a gene is material, it could never register a spiritual nature because matter does not even recognize the existence of Spirit.

A parent or teacher may cultivate a moral sense in their child/student, encourage spiritual affection, but ultimately, one's relationship to God is entirely individual - the individual must discover it him or herself. Should this be surprising when each of us is a unique idea created by the one Creator, each having a unique relationship - no intercessor!?

"The relations of God and man, divine Principle and idea, are indestructible in Science; and Science knows no lapse from nor return to harmony, but holds the divine order or spiritual law, in which God and all that He creates are perfect and eternal, to have remained unchanged in its eternal history." (S&H)