The variety of inherited qualities comes from strength and weakness of constitution—that is to say, when the two parents are weak, the children will be weak; if they are strong, the children will be robust. In the same way, purity of blood has a great effect; for the pure germ is like the superior stock which exists in plants and animals. For example, you see that children born from a weak and feeble father and mother will naturally have a feeble constitution and weak nerves; they will be afflicted and will have neither patience, nor endurance, nor resolution, nor perseverance, and will be hasty; for the children inherit the weakness and debility of their parents.

Besides this, an especial blessing is conferred on some families and some generations. Thus it is an especial blessing that from among the descendants of Abraham should have come all the Prophets of the children of Israel. This is a blessing that God has granted to this descent: to Moses from His father and mother, to Christ from His mother’s line; also to Muḥammad and the Báb, and to all the Prophets and the Holy Manifestations of Israel. The Blessed Beauty1 is also a lineal descendant of Abraham, for Abraham had other sons besides Ishmael and Isaac who in those days migrated to the lands of Persia and Afghánistán, and the Blessed Beauty is one of their descendants.

Hence it is evident that inherited character also exists, and to such a degree that if the characters are not in conformity with their origin, although they belong physically to that lineage, spiritually they are not considered members of the family, like Canaan,2 who is not reckoned as being of the race of Noah.