Most of the time in culture with the number 4 is related to life and death for example 4 and dead in Chinese have only a tonal difference. Some research has found each person has 4 basic needs:
The need to live or survive
The need to feel important
The need to for variety
The need to love and be loved
I feel like each of these correlates with the dawnshard divisions.
The need to live - Live
The need to feel important - Endure, protect
The need for variety - Change
The need to love and be loved - Feel, Emotions
My main guess at the four commands would be Endure, Change, Live, and Feel