Why Were the Matriarchs Barren?

Shalom Rabbi, I’m looking for a source in Chazal or the Mefarshim for the idea that the barrenness of the Imahot was meant to break the hereditary chain of negative traits from their fathers households (Charan, Betuel, and Lavan)—so that instead of passing those traits down naturally, they would transform through prayer into "new creations" and bear children in purity. Do you happen to know where this is brought down?

Shalom, Thank you for your question. I’m unaware of such a commentary – but that doesn’t mean it doesn’t exist, just that in my (limited) learning I haven’t seen it written. None the less, it sounds like a good explanation, which is valid in and of itself. Thank you for sharing it with me. (Sorry I don’t have a source for you). Blessings.