On death the soul travels to the upper world on "the Silver Road." It is met there by the divine force or forces its life tied or oriented it to come to claim it. Where there is one, the soul is its property and enters its service. Where more than one some degree of choice exists. There are also forces, like the god Slidranth, who steal souls on the Silver Road.
EXAMPLE - If you serve Abaddon in life you go to an afterlife ruled by Abaddon. If you serve Enki, your afterlife is ruled by Enki. The details of said afterlife vary with the nature of the god.