Facts

It is said that by maintaining their own language,the Jews effectively separated themselves from the Egyptians, which decreased their involvement in idolatry.

1Ne2

Even in the context of the wilderness, Lehi takes time not to just pray but to build an altar of stones to thank the Lord.

Then we are introduced to the stiffneckdness of Laman and Lemuel. Apparently, their father is so concerned that he wishes they could be like the river and the valley. It is evident they are on his mind a lot.

I can only imagine the scene: Laman and Lemuel arguing with their father, and Nephi retiring to a corner, crying, wondering why they have to argue like that. Nephi is a spectator because he is too young. Lehi only talks to Laman and Lemuel. But Nephi has a tender heart and prays to understand what is going on. Then, he tries to convince his brothers of the truthfulness of what their father is saying.

I see this in the context of a society where the father rules and who wants to go against the father, even if he is a prophet? In a way, Laman and Lemuel are being brave in voicing their concerns.

I don't know to what extent this was a normal , everyday conversation: going against your father?  So, Nephi, is the young child exposed to all this craziness. 

I think he also wasn't sure about his father but instead of reacting- probably because he is too young- he prays to understand. And the Lord softens his heart and confirms the words of the father. So, he tries to rectify things with his brothers . Sam believes him. But not the older brothers. 

Then the Lord speaks to him and introduces the concept of keeping the commandments and prospering in the promised land. And the curse for the Lamanites.