Four Hundred Texts on Love (Third Century) 22

52.  When you see that your intellect reflects upon its conceptual images of the world with reverence and justice, you may be sure that your body, too, continues to be pure and sinless. But when you see that your intellect is occupied with thoughts of sin, and you do not check it, you may be sure that before very long your body, too, will fall into those sins.

Our nous absorbs anything toward which we attune it. It forms our understanding and shapes our thoughts, feelings, and actions. Our body cannot be distinguished or separated from our heart. We cannot do anything without our body; we are embodied spiritual beings. And so it naturally follows that our spiritual attitude expresses itself in bodily action.