Ex 17:15

17:15 The Lord is my banner. The Hebrew word translated “banner” underlies “staff” in v. 9 and is used for the “pole” on which the bronze serpent was later placed (Num. 21:8). Since “banner” suggests cloth to us, this connection is lost. A spear could serve as a standard in battle, with or without bits of cloth tied to it. Later, a staff might have a device on it to mark the rallying point for troops. In the ancient world, these were sometimes images or signs of the gods. Moses’ staff is the ensign to which Joshua’s army could look and that symbolized God’s saving power. Moses declares that God Himself is the Standard, the Ensign of His people.