I think people believe in heaven because they don’t like the idea of dying, because they want to carry on living and they don’t like the idea that other people will move into their house and put their things into the rubbish.
The best way to untangle a knotty tangle is not to “untie” the knots, but to keep pulling the loops apart wider and wider. Just make the mess as big, loose and open as possible. As you open up the knots they will unravel themselves. Works on cords, strings, hoses, yarns, or electronic cables.