King Benjamin tells the people that God gives them everything and He only asks them to obey His commandments. And when they keep the commandments, God immediately blesses them. The king feels that he is too old to rule and makes his son Mosiah the new king.
In the past, the people obeyed the commandments of King Benjamin and his father before him. King Benjamin asks the people to treat his son the same way they treated him. Then the king warns the people to beware of fighting and contending with one another. God wants them to have peace and harmony in the kingdom.
Mosiah 2:19, 21, 22, 29, 30, 31, 32, 33
19 And behold also, if I, whom ye call your king, who has spent his days in your service, and yet has been in the service of God, do merit any thanks from you, O how you ought to thank your heavenly King!
21 I say unto you that if ye should serve him who has created you from the beginning, and is preserving you from day to day, by lending you breath, that ye may live and move and do according to your own will, and even supporting you from one moment to another—I say, if ye should serve him with all your whole souls yet ye would be unprofitable servants.
22 And behold, all that he requires of you is to keep his commandments; and he has promised you that if ye would keep his commandments ye should prosper in the land; and he never doth vary from that which he hath said; therefore, if ye do keep his commandments he doth bless you and prosper you.
29 And moreover, I say unto you that I have caused that ye should assemble yourselves together, that I might declare unto you that I can no longer be your teacher, nor your king;
30 For even at this time, my whole frame doth tremble exceedingly while attempting to speak unto you; but the Lord God doth support me, and hath suffered me that I should speak unto you, and hath commanded me that I should declare unto you this day, that my son Mosiah is a king and a ruler over you.
31 And now, my brethren, I would that ye should do as ye have hitherto done. As ye have kept my commandments, and also the commandments of my father, and have prospered, and have been kept from falling into the hands of your enemies, even so if ye shall keep the commandments of my son, or the commandments of God which shall be delivered unto you by him, ye shall prosper in the land, and your enemies shall have no power over you.
32 But, O my people, beware lest there shall arise contentions among you, and ye list to obey the evil spirit, which was spoken of by my father Mosiah.
33 For behold, there is a wo pronounced upon him who listeth to obey that spirit; for if he listeth to obey him, and remaineth and dieth in his sins, the same drinketh damnation to his own soul; for he receiveth for his wages an everlasting punishment, having transgressed the law of God contrary to his own knowledge.