Perfect Goodness: Can can only do that which is good. He must always choose the best option.

Perfect Necessity: God exists necessarily. He must exist as he has no beginning. This relates back to perfect goodness. It is better to exist than to not exist, so God must do what is better. He exists.

Perfect Freedom: God is perfectly free in that He can do anything within the confines of His own creation. e.g. God cannot create an object that is both completely spherical and completely cubical as it is a logical impossibility. While God is free, he is still limited by logic.