WLC Q.96: What particular use is there of the moral law to unregenerate men?
The moral law is of use to unregenerate men, to awaken their consciences to flee from wrath to come, (1 Tim. 1:9–10) and to drive them to Christ; (Gal. 3:24) or, inexcusable, (Rom. 1:20, Rom. 2:15) and under the curse thereof. (Gal. 3:10)