Once again, my mind was blown in class discussion. I always thought of Christianity (and in my limited knowledge, Judaism) as monotheistic. What I was missing was the wording of “thou shalt have no other god before me.” Moses, by the inspiration of God, is telling the Israelites to forsake the worship of other gods. By doing this, he leaves open the possibility of other gods.
In my personal opinion, this is a lesson on tolerance for believers of the Bible. This passage could mean that there are more gods, and that followers of the Bible should simply place God before them–not hate, not go to war, not start an argument in the comment section. His commandment is simply to place their own God first, and that’s all that’s necessary. This allows for tolerance of other religions by acknowledging their existence and simply saying to follow the one that you feel is almighty.
There is also the possibility of interpreting this as forsaking other idols that humans commonly place before God (money, cars, other relationships, work, etc). This still fits the same meaning, in my interpretation, because the Commandments are effectively telling people to fix their eyes on what’s important and mind their business.