Amalickiah should have recognized he was fighting against his God, being an apostate Nephite. However, he had joined forces with Satan and was blind in his mind. He cursed God instead of turning to him (v. 27). His oath to drink Moroni’s blood reminds us of Cain making an oath with Satan to kill Abel.
28 And it came to pass that Cain took one of his brothers’ daughters to wife, and they loved Satan more than God.
29 And Satan said unto Cain: Swear unto me by thy throat, and if thou tell it thou shalt die; and swear thy brethren by their heads, and by the living God, that they tell it not; for if they tell it, they shall surely die; and this that thy father may not know it; and this day I will deliver thy brother Abel into thine hands.
30 And Satan sware unto Cain that he would do according to his commands. And all these things were done in secret. [Moses 5:28–30; see also Genesis 4:8]
On the other hand, the Nephite people recognized their God (v. 28), and Mormon, as he abridges, recognized the prosperity of the church because of the work of Helaman and his brethren (v. 30). We should also acknowledge the repentance of Corianton, as shown by his being listed with Helaman (v. 30). Thank God again for the principle of repentance.