I've already explained, this Kṛṣṇa, Sanskrit word, means "all-attractive." But in the greatest. You say that God is great. Kṛṣṇa means the greatest all-attractive. Unless you become very great, you cannot be attractive. According to our material calculation, if one is very rich, he's attractive. If one is very influential, he's attractive. If one is very wise, he's attractive. If one is very beautiful, he's attractive. In this way, we attract. So God, Kṛṣṇa, has got all the six opulences of attraction; therefore He is called Kṛṣṇa.
So our recommendation is . . . not our; it is the recommendation of Śrī Caitanya Mahāprabhu, who inaugurated or revitalized this Kṛṣṇa consciousness movement five hundred years ago in Bengal as Lord Caitanya Mahāprabhu. He said, nāmnām akāri bahudhā nija sarva śaktis, tatrārpitā niyamitaḥ smaraṇe na kālaḥ. Nāmnām akāri: the name and the person whose name. Because God is absolute, there is no difference between His name and He Himself. Just like in this material calculation, if you want water, simply by chanting "water, water," you won't get water. The water substance is different from the name "water."
But God being absolute, His name, His form, His quality, His entourage, they are all the same, as good as God. So if you associate with any one of them, either God personally or with His name or with His form or with His quality or with His paraphernalia, immediately you become in contact with God. This is the science.