Lehi blesses the lineage of Laman. He has seen the future of this lineage, and doubtless has a hard time with the blessing he will give, because he understands the nature of the future choices of this lineage. Nevertheless, he wants to leave a good blessing. Lehi begins the blessing with the most hopeful statement he can make, that he knows that if those children are brought up "in the way" that they should not depart from it. "The way" is the gospel, and Lehi is telling his grandchildren the same thing that we are told, and should be teaching our children. If we are brought up in the gospel, if our parents teach the gospel to us, we have the best chance to remain in the "way." Despite the prophecies, Lehi knows that this lineage is not inherently bad, but that grave responsibility will fall upon those that will teach those children to depart from the way of the Lord.