God in righteous retribution gives them up to their own way; the sin becomes its own punishment (Pro 1:31).
many altars - in opposition to God’s law (Deu 12:5, Deu 12:6, Deu 12:13, Deu 12:14).
to sin ... to sin - Their altars which were “sin” (whatever religious intentions they might plead) should be treated as such, and be the source of their punishment (1Ki 12:30; 1Ki 13:34).