Is There Further Evidence Of Only One God In The Book Of Mormon?

In addition to what has already been quoted, there is clear, additional testimony from the Book of Mormon that affirms the existence of only one, true living God:

For mine own sake, yea, for mine own sake, will I do this; for I will not suffer my name to be polluted, and I will not give my glory unto another. (I Nephi 20:11 LDS; 6:18 RLDS)

And he had sworn in his wrath unto the Brother of Jared, that whoso should possess this land of promise, from that time henceforth and forever, should serve him, the true and only God, or they should be swept off when the fullness of his wrath should come upon them. (Ether 2:8 LDS; 1:30 RLDS)

The combined testimony of both the Bible and the Book of Mormon is clear: There is only one God.