Mosiah is most likely linked to the Hebrew term; “Moshia”, which represents a Champion of Justice against oppression, appointed by God, whose Mission is to liberate a chosen people from oppression, especially by non-violent means.
Chapters 2-5 encompasses the speech given by King Benjamin to his people.
King Benjamin explains that an angel came to him to “…declare unto [him] the glad tidings of great joy.” (Mosiah 3:3) The angel instructed him to share this message with his people.
King Benjamin shares what the angel had shared with him, about the coming of a Savior.
“For behold, the time cometh, and is not far distant, that with power, the Lord Omnipotent who reigneth, who was, and is from all eternity to all eternity, shall come down from heaven among the children of men, and shall dwell in a tabernacle of clay (a body of flesh and bones), and shall fo forth amongst men, working mighty miracles, such as healing the sick, raising the dead, causing the lame to walk, the blind to receive their sight, and the deaf to hear, and during all manner of diseases. And he shall cast out devil’s, or the evil spirits which dwell in the hearts of the children of men. And lo, he shall suffer temptations, and pain of body, hunger, thirst, and fatigue, even more than man can suffer, except it be unto death; for behold, blood cometh from every pore, so great shall be his anguish for the wickedness and the abominations of his people. And he shall be called Jesus Christ, the Son of God, the Father of heaven and earth, the creator of all things from the beginning; and his mother shall be called Mary” (Mosiah 3:5-8)
King Benjamin goes on to explain that Salvation of men, comes only through Jesus Christ. Unfortunately he also explains that when Jesus Christ comes, the people will reject him and they will crucify him. This address happens roughly 124 years before the coming of Christ. King Benjamin explains that through the Atonement of Jesus Christ “…the sins of those who have fallen by the transgression of Adam, who have died not knowing the will of God concerning them, or who have ignorantly sinned.” (Mosiah 3:11)
For Salvation “…cometh to none such except be through repentance, and faith on the Lord Jesus Christ.” (Mosiah 3:12)
Salvation comes only through Jesus Christ, no one else. But we have our part, we must repent and have faith in Jesus, and continue to live a faithful, Christ centered life. Remember, faith without works is dead.
Because the people were stiffnecked, the Lord appointed the Law of Moses, and through this many signs and wonders were given to the people, He even sent Prophets to teach them. Yet, they still hardened their hearts and did not follow the Law of Moses. They began to rebel against the Lord.
King Benjamin introduces an important piece of the Gospel, children cannot sin, and if they were to sin, they are “…blessed; for behold, as in Adam, or by nature, they fall, even so the blood of Christ atoneth for theirs sins.” (Mosiah 3:16)
King Benjamin reiterates that ONLY THROUGH JESUS, CAN ONE BE SAVED, “…there shall be no name given nor any other way nor means whereby salvation can come unto the children of men, only in and through the name of Christ, the Lord Omnipotent.” (Mosiah 3:17) Many believe, falsely, that Mormons do not believe in Jesus Christ, nor do they believe that Salvation can only come through Him. No, it does not come through Joseph Smith.
King Benjamin goes on to explain the the “natural man”, is an enemy of God.
“For the natural man is an enemy to God, and has been from the fall of Adam, and will be, forever, unless he yields to the enticings of the Holy Spirit, and putteth off the natural man and becometh a saint through the atonement of Christ the Lord, and becometh as a child, submissive, meek, humble, patient, full of love, willing to submit to all things which the Lord Seth fit to inflict upon him, even as a child dieth submit to his father.” (Mosiah 3:19)
King Benjamin explains the a time will come in the future that the “…knowledge of a Savior shall spread throughout every nations, hundreds, tongues, and people.” (Mosiah 3:20)
King Benjamin explains that when our time comes, and we stand before God, we will be judged “…every man according to his works, whether they be good, or whether they be evil.” (Mosiah 3:24)
Those who choose to work in evil, shall be “…consigned to an awful view of their own guilt and abominations, which shall Roth cause them to shrink from the presence of the Lord into a state of misery and endless torment… And their torment is like of fire and brimstone, whose flame are unquenchable…” (Mosiah 3:24-27)
When we choose to sin, we are only trapping ourselves in torment. Our he’ll in the next life will be to re-live our own guilt and sufferings that has been caused by our sins and the pain and anguish we caused others in our sins.