Admonish

Webster's Dictionary of the English Language

·vt To instruct or direct; to Inform; to Notify.

II. Admonish ·vt To warn or notify of a fault; to reprove gently or kindly, but seriously; to Exhort.

III. Admonish ·vt To counsel against wrong practices; to cation or advise; to warn against danger or an offense;

— followed by of, against, or a subordinate clause.