The Israelites witnessed Yahweh"s glorious entrance into His sanctuary on Mt. Zion. David described the scene as what would have accompanied an earthly monarch and may have accompanied his own entrance into Jerusalem. The "fountain of Israel" ( Psalm 68:26, NASB) pictures the nation of Israel as a fountain of blessing. Benjamin was the smallest tribe in the south, but a leader nonetheless. Judah was the largest tribe in the south. Zebulun and Naphtali were northern tribes that David may have chosen because of their prominence in Deborah"s song ( Judges 5:18). Together these four tribes represent all the Israelites, from the south and the north. [source][source][source]