This power could be a particle or the well-known GOD. The same power is also the one that has instilled in us the moral sense that allows us to recognize those moral facts and feel our commitment to them. This supreme power is of course GOD, the creator of the world, who established both the laws of nature and the laws of morality.
This position does raise questions in itself, such as the well-known question of the epitaph – whether GOD set the laws of morality as he pleases or whether they exist separately from him/her. However, these questions are easier to answer than the existential difficulties posed by error theory.
In other words, one who feels that there is absolute good and evil, that do not change from person to person and society to society, then this belief inevitably leads to belief in GOD, which alone can justify belief in absolute morality.