There is a Bengali verse which says, eka kṛṣṇa nāme yata pāpa hare, ai haya tati pāpa karibare nare: "By chanting once the holy name of Kṛṣṇa, the sinful man can vanquish so much volumes of sinful activities, reaction, that he's unable to perform." A sinful man is very expert to commit sinful activities, but the holy name of Kṛṣṇa is so strong that he will be unable to commit so much sins as can be extinguished simply by uttering once the name of Lord Viṣṇu or Kṛṣṇa. This is a fact.
But unfortunately, we, by chanting, vanquish all kinds of sinful activities— that's all right—but the next moment we again begin. So that is the defect. Just like I have taken some poison. Now you go to a doctor, he gives you medicine. The poisonous effect is finished, or gone. You are now free. And just after coming from the doctor's house, again you take poison, and again go to the doctor.
The doctor will give you medicine, but what is this business, that you go to the doctor and counteract the poisonous effect and again come back and again take poison? What is this business? Is it very intelligent business? If you want to take poison, then take poison and die. Why you go to the physician and counteract it and again take poison? You see?
So there are certain systems that . . . just like in Christian religion, they go weekly to the church and confess their sinful activities, and it is counteracted. That's all right. God can counteract anything, or God's representative can do that. But again, just coming from the church, again I begin the same thing? It is the gravest type of sinful act. That is the Vedic injunction. Nāmno balād yasya hi pāpa-buddhiḥ (Padma Purāṇa, Brahma-kaṇḍha 25.16). Anyone who commits sin on the strength of chanting the holy name of Viṣṇu, oh, his sinful activities cannot be vanquished even by so much attempt performing sacrifices or penances.