Deuteronomy 21:19
Then shall his father and his mother lay hold on him, and bring him out unto the elders of his city, and unto the gate of his place;
Cross-reference
Deuteronomy 25:7 also brings a case to the elders at the city gate — the same location and legal procedure.
Deuteronomy 16:18 establishes local judges — the same judicial system that handles the case at the gate here.
Zechariah 13:3 shows parents executing a false prophet child — mirroring the parental action against a rebellious son here.
In Ruth 4:1, Boaz goes to the gate for legal proceedings — same public forum where elders judge the rebellious son. Strong parallel of gate as place of justice.
Job 29:7 depicts Job sitting at the gate as an honored judge — echoing the role of elders at the gate in Deuteronomy.
Proverbs 31:23 describes the husband sitting among elders at the gate — same setting as the elders judging the rebellious son.