Gregory the Dialogist

16. And it should be noted that the Lord rouses the boy while he is resting, without Eli knowing, yet once roused, He by no means reveals the reason for his calling unless that same Eli instructs him, because He raises chosen subjects through hidden inspiration toward the desire for the heavenly homeland, yet through their rest He does not permit them to be called to the homeland they love without the permission of their superiors. …

Commentary on 1 Kings, Book 2, Chapter 4 ↗