The Force is God. Or Allah. Or Yahweh. Or fate. Or the grand cosmic hum.
Whatever you want to call it, it's a way of talking about spiritual issues without invoking any specific religions. And, bonus, it lets you move things with your mind.
But strip away the Force magic, and what you're looking at is human meditation with the universe. That helps us connect to the story in The Force Awakens in a very powerful way as well as allows the film to explore spiritual questions.
Questions About Spirituality
Why is the Force divided between the light side and the dark? What does that say about the presence of evil as well as good?
What is the significance of Han's conversion from a skeptic to a true believer? Does it make a difference that he has seen the effects of the Force directly?
How do the heroes embody the interconnected nature of the Force? How do the villains represent the opposite of that unification?
Why does the Force allow terrible things to happen in this universe? What is the purpose of suffering here?
Chew on This
The heroes embrace the true nature of the Force while the villains only accept one side.
The dark side of the Force is part of the light. One cannot exist without the other.