When we hear about the Lord, we should hear with a spirit to serve the Lord. When we chant his names, we should chant so that He is pleased to hear us chanting. That is the beauty of life, the real art of living.
Terrorist guns can kill the material body, but the Holy Name of the Lord can kill the enemies within the mind of the person.
To associate with the holy name and chant the holy name is to associate with the Personality of Godhead directly.
In this material world there are only two representatives of the Supreme Personality of Godhead; the transcendental sound vibration of the Holy Name and his eternally transcendental deity incarnation.