The house of the LORD is the human brain, and its gate is the threshold where a person passes inward through meditation into the temple of the head, not a door in any building of stone. To stand in that gate is to hold the entrance of higher consciousness open, where the logic circuits of the mind receive the inner word.
Judah is the right hemisphere, the tribe of light, the sun-side of the brain, and those entering these gates to worship are the powers of that luminous side turning inward toward their source. Worship here is not ceremony. It is consciousness passing through the gate of the brain to meet the light already dwelling in the head.
Gate of the LORD's house: the threshold of the brain, the entrance passed through in meditation
House of the LORD: the human brain, the true temple
Judah: the right hemisphere of the brain, the tribe of light and the sun within