The ten kinds of offenses should be considered. In the beginning, when one is initiated into the chanting of the Hare Krsna maha-mantra, there are naturally many offenses. However, the devotee should be very careful to avoid these offenses and chant purely. This does not mean that the Hare Krsna maha-mantra is sometimes pure and sometimes impure. Rather, the chanter is impure due to material contamination. He has to purify himself so that the holy names will be perfectly effective. Chanting the holy name of the Lord inoffensively will help one get immediate shelter at Krsna's lotus feet. This means that by chanting purely, one will immediately be situated on the transcendental platform. We should note, however, that according to Sri Caitanya Mahaprabhu's instructions, one should not wait to purify himself before chanting the Hare Krsna mantra. Whatever our condition may be, we should begin chanting immediately. By the power of the Hare Krsna mantra, we will gradually be relieved from all material contamination and will get shelter at the lotus feet of Krsna, the ultimate goal of life.