Christ gives salvation

After quoting a lot of Isaiah, which tends to center around a few themes:

1) trust God

2) Christ will come and save all

3) Wicked will be destroyed

Nephi gets very clear. This is how he ends his first chapter after the Isaiah chapters:

28 And now behold, my people, ye are a ^astiffnecked people; wherefore, I have spoken plainly unto you, that ye cannot misunderstand. And the words which I have spoken shall stand as a ^btestimony against you; for they are sufficient to ^cteach any man the ^dright way; for the right way is to believe in Christ and deny him not; for by denying him ye also deny the prophets and the law.

29 And now behold, I say unto you that the right way is to believe in Christ, and deny him not; and Christ is the Holy One of Israel; wherefore ye must bow down before him, and ^aworship him with all your ^bmight, mind, and strength, and your whole soul; and if ye do this ye shall in nowise be cast out.

So - worship Christ. Follow him in part by following the prophets and the law and in part by bowing before him and doing all you can to follow him. Very plainly spoken Nephi. Definitely a book focused on Christ and helping people understand the need and way to follow Him.