Wherefore, the things which are pleasing unto the world I do not write, but the things which are pleasing unto God and unto those who are not of the world.
Nephi is writing this about what he is going to include in the Plates.
For he truly spake many great things unto them, which were hard to be understood, save a man should inquire of the Lord; and they being hard in their hearts, therefore they did not look unto the Lord as they ought.
This is Nephi talking about his father, Lehi, speaking to Laman and Lemuel
Nevertheless, I did look unto my God, and I did praise him all the day long; and I did not murmur against the Lord because of mine afflictions.
Nephi speaking. This is after he was bound by Laman and Lemuel on the ship for 4 days.
For can a woman forget her sucking child, that she should not have compassion on the son of her womb? Yea, they may forget, yet will I not forget thee, O house of Israel.
Isaiah speaking to Israel, possibly our day Christs day and his day.
The people that walked in darkness have seen a great light; they that dwell in the land of the shadow of death, upon them hath the light shined.
Isaiah speaking about the land of Galilee also known as the land of the shadow of death or Zebulun and Nephtali. (Isaiah 9)
How beautiful upon the mountains are the feet of him that bringeth good tidings; that publisheth peace; that bringeth good tidings of good; that publisheth salvation; that saith unto Zion, Thy God reigneth;
Abinadi speaking about Christ. He is speaking to King Noah and the priests.
For we labor diligently to write, to persuade our children, and also our brethren, to believe in Christ, and to be reconciled to God; for we know that it is by grace that we are saved, after all we can do.
For behold, at that day shall he rage in the hearts of the children of men, and stir them up to anger against that which is good.
Wherefore, ye must press forward with a steadfastness in Christ, having a perfect brightness of hope, and a love of God and of all men. Wherefore, if ye shall press forward, feasting upon the word of Christ, and endure to the end, behold, thus saith the Father: Ye shall have eternal life.