Actually, in our present status, we can not worship Radha-Krishna. But as all the Visnu Murtis are situated in Krishna, therefore, our Radha-Krishna worship is transferred to Visnu, Lord Narayana. Visnu worship is the regulative devotional principles, and Radha-Krishna worship is spontaneous service of eternal feelings. Therefore, as Laksmi-Narayana is the Deity of great opulences, similarly our Radha-Krishna Murtis also should be worshiped with great pomp and dignity. Krishna will give you the proper intelligence to do this very nicely. So far as prayers, you may sing Hare Krishna, Govinda Jaya Jaya, and Govindam Adi purusam.
Letter to Satsvarupa, 12 February, 1969