Jehovah Nissi—The Lord is my Banner—reveals God as our victory banner who fights our battles and provides protection, identity, and triumph. This name appears in Exodus 17:15 after Israel's victory over the Amalekites. The battle illustrates how God works through both prayer (Moses on the mountain) and action (Joshua in the valley). We need others to support us in spiritual battles, just as Aaron and Hur held up Moses' arms. Jesus fulfills the role of Jehovah Nissi as our ultimate banner, lifted up on the cross to provide salvation. When we understand God as our banner, we recognize that true victory comes from Him, not our own strength.