HU is an ancient name of God. In ECKANKAR, we use it during our contemplations, among other charged words. You can chant HU, regardless of your religion. It is an uplifting mantra that gives peace and calm, particularly when life is giving you a rough time. Below is a link for you to listen to if you wish.
The Law of HU declares that the ECK or divine spirit, or what we call the Light and Sound of God, are the formers of this and many other universes. It is this divine spirit that gives life to the matter in this reality.
I hope all of you have a terrific Saturday.
May the blessings be.