During the Exodus, before the Israelites left Egypt, Moses talked to the Burning Bush.

The Bush told Moses that in preparation for the departure from Egypt, the Israelites could not leaven their bread, so that when the day of the Exodus finally came, they would be ready to leave at a moment's notice. Every Israelite lived in a family hut, all except for old lady Nina, whose husband had passed on with no children. Everyone complied to this rule for the quite some time, but one day when Moses consulted the Bush, the Bush told him that one of the Israelites had failed to follow the rule, and unless that Israelite was disciplined or came forward to confess their sin and be shamed in front of the tribe, they would all be slaves of the Pharaoh for eternity. Naturally, this caused some commotion as to who could have violated this rule, and also naturally, all denied having leavened the bread. Everyone had their families as witnesses claiming they did not break the rule. All except for Nina, as she lived alone. Since she was so well respected, no one questioned her at first, but eventually all the evidence began to point in her direction. Rather than asking her directly, and thus humiliating her before the Israelites, Moses asked the Burning Bush if she was the perpetrator. He and his brother Aaron approached the holy ground, and Moses asked aloud "BUSH, DID NINA LEAVEN?"