I'd still like to know how atheists believe in "matter in motion".
Rocks, dirt, minerals, etc. don't move on their own. "A body at rest stays at rest" as Newton pointed out.
So what is the source of movement in the cosmos and on earth?
What gives living things the ability to move, but dead things cannot? The chemical composition of a recently dead person and a person about to die is identical, but one can do many things the other cannot. What is the atheist's explanation?
There are perfectly logical non-supernatural explanations for everything you mention. One can believe in life without believing in God.
All mass is energy. Mass is just a measure of some configuration of energy. Nothing can be at rest. That is an approximation used in classical physics. The lowest energy state of anything is the ground state, which is an energy configuraiton in constant motion.
A living thing is a machine composed of matter. It's the properties, of the particles hte machine is composed of that results in the capacities of the being. IOWs it's the physics that provide for the machinery of life. Living things move, because of the coordinated interactions of their components.
" The chemical composition of a recently dead person and a person about to die is identical"
No. The chemical composition if both are different. A living organism has a composition that provides the ability to maintain a roughly equilibrium composition of energy stores, derived from foods made available by the energy of sunlight. When a living organism is diseased, or dead, maintaining that roughly equilibrium composition becomes, or has become impossible. Once the machine's broken in such a way, the effect is irreversible.