“When Israel went out of Egypt, the house of Jacob from a people of strange language; Judah was His sanctuary, and Israel His dominion.” Psalm 114:1-2 (KJV)
The Psalmist; probably not David, but another of a later time acknowledges GOD as the Ruler of the nation.
The LORD is the One who delivered Jacob [Israel] out of Egypt. Judah is the sanctuary of God’s abiding. It is from Judah which our Saviour Jesus the Christ came. It is in Judah where Jerusalem is.
Israel the new name for Jacob is the place of God’s rule; and covers the entirety of the kingdom.
It is Christ Jesus who is the King. It is within His people that He is abiding; His sanctuary. Yet He has a plan for Israel.
Just as the LORD delivered Jacob out of Egypt; so too does He deliver sinners out of sin, and death. He has sent His Son Jesus who died on the cross, was buried, and He rose from death, and forever lives. Believe Him and live forever with Him.