This Deity worship means to train the neophytes devotees how to concentrate upon the form of Kṛṣṇa, especially His lotus feet. That will make our life pacified always, śānta, śānta, pacified, peaceful.
Śrīla Prabhupāda's lecture on Śrīmad-Bhāgavatam 1.15.28 -- Los Angeles, December 6, 1973