Ezekiel 21:21

“He shook the arrows to and fro, he consulted the teraphim, he looked in the liver.”

These were three ways of determining the will of the gods. The shaking up of arrows in their quiver (belomancy), in this case probably with the names of the cities on, and then drawing one out with suitable ritual (this was also a common practise among Arabs); consulting the teraphim, household cult objects used for divination (see 2 Kings 23:24); and examining the marks on the liver of a sacrificed animal (hepatoscopy), for which procedures were well known which were taught to the initiated, probably firstly by the use of clay models of which we have discovered examples.

Ezekiel no doubt in some way mimed each of these actions as the tension grew.