"And it came to pass that when we had gone up tot he land of Jerusalem, I and my brethren did consult one with another."
After three days of traveling the four brothers got together and talked about how they were going to get the plates from Laban. As said before this would be a daunting task and would take a lot of courage. So, they probably came up with several approaches to get the plates. This would have been a terrifying task, yet Sam and Nephi were the only two really willing to be there in the first place. Laman and Lemuel were less likely to want to try anything beyond the normal level of activity. They have proved their loyalty before with murmuring words against their father and the words of the Lord.
Nephi brother++ arrive, travel three day fsh. Happen they together talk, plan receive plate how? Try get plates scary why? Laban top man. courage True-biz need. Brother+++ plan many thing probably. Sam Nephi want work follow Lord, Laman, Lemuel not. Laman, Lemuel try hard not, they before show follow how much? They complain, not listen father or Lord His word.