Shared ground
Deuteronomy 17:8–11 assumes local courts exist (“within your gates”) and that some disputes will exceed their ability to decide well. The text’s direct move is escalation, not improvisation: hard cases go to “the place Yahweh…shall choose,” where authorized leaders give a determinate ruling (a “sentence/decision,” sentence).
The passage also links national unity and justice to centralized authority. A decision issued from the chosen place is treated as binding, and the language stresses precise compliance (“do according to all that they shall teach you…do not turn aside”).
Where interpretation differs
What kinds of cases are in view. The text lists “between blood and blood…plea and plea…stroke and stroke.” Some read “blood and blood” narrowly as homicide/murder questions. Others read it more broadly as any case involving bloodguilt or blood-related liability, alongside other contested civil matters.
How the priests and the judge relate. The passage names “the priests the Levites, and… the judge who shall be in those days.” Some take this as a joint court where priests provide instruction from the law and the judge gives the formal ruling. Others think the main authority is priestly, with “the judge” naming a leading official who works with them, or a civil counterpart present as needed.
What “the law” means here. The leaders’ instruction is called “the law” as well as a case-specific “judgment.” Some understand “the law” mainly as a recognized written code being applied. Others take it as broader authoritative teaching rooted in Yahweh’s instruction, not limited to a single document.
Why the disagreement exists
The expressions (“blood and blood,” “stroke and stroke”) are idiomatic and can be heard more than one way. Also, the passage does not spell out courtroom procedure: it names the personnel and the binding outcome, but not how deliberations are divided between priestly and civil leadership, or how “the law” is consulted and communicated.
What this passage clearly contributes
Explicitly, the text establishes a final-court pattern for Israel: when local judges cannot resolve a contested matter, the case is transferred to Yahweh’s chosen central site, where priests (Levites) and the current judge issue a definitive decision. Theologically by inference, this portrays justice as a covenant matter tied to Yahweh’s chosen center, aiming for consistent judgments across the nation rather than fragmented local outcomes. It also frames authoritative teaching and concrete rulings as closely connected: instruction in “the law” is meant to land in real decisions that settle disputes.