He is using the "build-up" method: start with least important and then BUILD UP to the most important.
It's a TRIED & TRUE method of public discourse.
Not necessarily.
In part the order is in terms of ease of achievement and of education. Start dressing well and one may end up behaving well.
Practice of virtue creates virtue. That’s why the practice of prayer - and in many religions, the use of rituals and customs - reinforces faith.