Raising the banner is the act of lifting a rallying standard so that troops, kindred, and onlookers gather under one name. Moses raised an altar called Jehovah-Nissi after the victory over Amalek — "the LORD is my banner" (Exodus 17:15). Isaiah saw the LORD lifting an ensign to the nations: "And he will lift up an ensign to the nations from far, and will hiss unto them from the end of the earth" (Isaiah 5:26); "there shall be a root of Jesse, which shall stand for an ensign of the people" (11:10). The Song of Songs sings: "his banner over me was love" (Song 2:4). Christian men gather under the raised banner of the cross.
The act of lifting a flag or standard around which troops or people gather; an ensign of war or of identity.
Webster: banner — “a square flag; a military ensign; the principal standard of a prince or state.”
In Scripture, the LORD Himself is named a banner (Jehovah-Nissi, Ex 17:15), and the Messiah is prophesied as an ensign to whom the nations will rally (Isa 11:10).
Exodus 17:15 — "And Moses built an altar, and called the name of it Jehovahnissi."
Isaiah 11:10 — "And in that day there shall be a root of Jesse, which shall stand for an ensign of the people; to it shall the Gentiles seek."
Song of Solomon 2:4 — "He brought me to the banqueting house, and his banner over me was love."
Psalm 60:4 — "Thou hast given a banner to them that fear thee, that it may be displayed because of the truth."
Modern Christianity has lost the picture of the LORD Himself as the rallying ensign — we sing about it without seeing it.
Moses named the altar after Israel's deliverance from Amalek: the LORD is my banner. The point: the LORD's outstretched arm, raised above the battle, was the standard around which Israel had rallied and won.
The household, the Marine, the watchman all need a named banner. Christ Himself is the New Covenant ensign; the church gathers under His name, in His sight, in His sign. Recover this and the spiritual life starts to feel less like solitary effort and more like enlistment.
Hebrew has a noun for the standard itself and a verb for its lifting.
H5251 — נֵס (nes) — standard, banner, ensign; lifted as a signal to gather.
Note: same root behind Nissi in Jehovah-Nissi (Ex 17:15).
"Jehovah-Nissi: the LORD is my banner."
"Christ is the ensign to which the nations rally."
"His banner over me was love — the household's heraldry."