today i pulled out those little papers again, because we did the pasuk about the smoking oven and the torch of fire passing between the parts. we lined up all the pieces (opposite their friends ;) and then made the fire and smoke cross through. then we read that last bit of rashi.
then chana said: so if it were another person, instead of hashem, then both people would pass through the pieces?
i said that these were representatives of hashem.
she did not ask 1. why fire represents hashem. 2. why hashem used 2 representatives. perhaps she will ask upon review.