Philo Judaeus De Confusione Linguarum 149

[149] And I also admire the things which are spoken under divine inspiration in the books of Kings, according to which those who flourished many generations afterwards and lived in a blameless manner, are spoken of as the sons of David who wrote hymns to God; ¹ though, during his lifetime, even their great grandfathers had not yet been born. The truth is, that the birth here spoken of is that of souls made immortal by their virtues, not of perishable bodies, and this birth is naturally referred to the leaders of virtue, as its parents and progenitors.