Mass and energy are convertible one to the other and back.
The equation for a particle can be expressed as a sum of waves.
If the right waves impinge on the same point in spacetime, they are additive in a constructive way.
I.e. mass particles come into being where none were before.
God can do this.
The Bible uses words like God's bread, God's spirit, to express something that ancient writers lacked language for. Metaphors were used to express the physics.