The deeds of the flesh are to be crucified, although not by law keeping's self-effort, even if reinvigorated by our new birth. Sproul quotes Calvin in support of his sentiments toward the law. Calvin hardly romanticizes the law. The Christian's quest for God focuses on Christ Himself, not on law keeping. Christ, not law, is the unique means of grace to the believer.
Asceticism is the practice of extreme self-denial for the purpose of gaining religious advantage.
Asceticism is a counterfeit of the genuine self-denial revealed in the New Testament. Asceticism points the earnest seeker to his own ability, while Scripture directs him to the Spirit. The Bible also condemns asceticism. However, this must be accompanied and interpreted by the subsequent Epistles. Real self-denial takes place when the believer turns to the Spirit and lives by Him.