Shared ground
This speech targets people who use covenant language confidently while living in open contradiction to it. The text is explicit that the problem is not ignorance but refusal: they “hate instruction” and “throw” God’s words away (vv. 17). The result is a credibility crisis—God challenges their “right” to recite his statutes and speak covenant words (v. 16).
The passage also makes clear that this hypocrisy shows up in concrete actions and patterns: willing alignment with theft and adultery (v. 18) and the deliberate use of speech to harm—deceit, slander, and attacks even within close kinship bonds (vv. 19–20). The focus is less on isolated failure and more on settled participation and cultivated speech.
Where interpretation differs (only where needed)
What “right” means (v. 16). Some read God’s question mainly as a challenge to their authority/standing to speak in public worship or to teach others. Others read it mainly as a challenge to their credibility: their lives make their covenant talk hollow even if they remain members of the community.
What “consented with him” implies (v. 18). Some understand it as active partnership in wrongdoing. Others think the emphasis is approval and solidarity—seeing wrong and aligning with it rather than resisting or separating.
Who “brother” refers to (v. 20). Some take it as literal family, strengthened by “your own mother’s son.” Others see “brother” as any fellow Israelite or community member, with “mother’s son” functioning as a sharp way to stress betrayal of close bonds.
Why the disagreement exists
The Hebrew phrasing can carry more than one social nuance. Words like “right” can point to formal standing or to moral fitness; “consent” can be partnership or endorsement; “brother” can be biological kin or a covenant neighbor. The poem’s style is accusatory and compact, so it paints a profile without spelling out every boundary.
What this passage clearly contributes
The text explicitly links covenant speech (“my statutes,” “my covenant,” “my words”) with obedience as the measure of whether that speech is fitting (vv. 16–17). It also presents complicity and harmful speech as serious covenant violations, not side issues (vv. 18–20). Inferences may be drawn about worship integrity and community leadership, but the central contribution is straightforward: God rejects covenant talk that coexists with sustained rejection of instruction and practiced wrongdoing.