It wasn't a potential atonement actuated by the sinner, it was an actual atonement initiated by the savior.
John F. MacArthurWhy is discipline important? Discipline teaches us to operate by principle rather than desire. Saying no to our impulses (even the ones that are not inherently sinful) puts us in control of our appetites rather than vice versa. It deposes our lust and permits truth, virtue, and integrity to rule our minds instead.
John F. MacArthur