Va'era 5773

Hashem punishes the evildoers of the world by means of "Middah Kineged Middah"- measure for measure. The Midrash Tanchuma goes through every single plague and explains how Hashem punished the Egyptians measure for measure. For example, the 4th plague of wild animals was brought upon the Egyptians because they had ordered the Jews to bring back lions and bears from the wild in order to be used for sport. The wild animals were also completely removed from Egypt so that the Egyptians got no benefit from their skins.