The fact that Enos is hunting alone suggests that he was considered experienced enough to hunt without a companion. We may consider him of an age to be reflective but cannot guess an age. Almost certainly, a youth in this society would have been viewed as adult much earlier than his modern counterpart. I hypothesize that Enos was no younger than early to mid-teens, but he could also have been older. Nothing in the narrative gives us a clue. What is certain is that Jacob taught him and that Enos is remembering his teachings in the past, not the present. Jacob’s words have worked into Enos’s heart over time, a situation that many modern parents can understand and perhaps take comfort in.
Enos tells us explicitly that he has learned about Yahweh from his father. For some reason, at this particular time those teachings acquire urgency. Enos feels the need to have a personal experience of the things his father has taught him.