The Mekhilta presents another contrast between a mortal king at war and God. A king of flesh and blood, while engaged in battle, cannot supply all of his soldiers with what they need. The logistics of ancient warfare were brutal — armies often starved, ran out of water, or lacked basic provisions. Even the greatest military commanders in history lost battles because they could not feed their troops.
Not so the Holy One Blessed be He. "The Lord is a man of war" — He waged war against Egypt with devastating force. But simultaneously, "the Lord is His name" — He sustained every living creature on earth. The Mekhilta insists that God's military campaign did not interrupt His role as universal provider for even a single moment.
The proof texts are magnificent in their scope. First, from (Psalms 136:25): "He gives bread to all flesh." While the Egyptian army drowned, God was feeding every creature in creation. Then an even more expansive verse: "He gives the beast its food, the raven's young, what they call for" (Psalms 147:9). Even the baby ravens crying in their nests received their food from God at the very moment the Red Sea was closing over Pharaoh's chariots.
Perhaps most remarkable is the middle proof text from (Psalms 136:13): "He divides the sea into strips" — twelve strips, the tradition says, one for each of the twelve tribes of Israel. Even the miracle itself was logistics — God did not simply split the sea in two but organized it into twelve separate corridors so that each tribe could cross in an orderly fashion. The supreme warrior is also the supreme quartermaster.