New Defender's Study Bible Notes
5:20 offence might abound. The “law entered” the world because sin had entered the world, and death entered by sin (Romans 5:12). But from Adam to Moses (Romans 5:14), even though death reigned, sin was not “imputed” because men had only a vague intuitive knowledge of God’s law (Romans 5:13). When the law was finally given through Moses, however, then sin could be seen in full measure in its ugliness. Nevertheless, God’s grace was still more abundant, capable of redeeming and saving the most flagrant sinners.