A Few Concepts

I've wondered a few times, if there could be found the fewest number of concepts, which when expressed, are enough to deduce the entire Gospel from it more or less?

Candidates for consideration: Free Agency, Atonement, Exaltation.

Free Agency: Man can choose between Good and Evil. Removal of Free Agency is itself an utterly Evil act.
Atonement: Man can receive forgiveness for Evil that he has chosen.
Exaltation: Men have the potential for never-ending increase.

I would almost hesitate to add anything else to this list. What do you think?