Whatever devotee desires to worship with faith whatever form — I Myself strengthen his faith in that very form.

Principle of reciprocity: Kṛṣṇa responds to the bhakta according to his icchā (desire). If someone desires to worship a specific tanu (form), Kṛṣṇa vidadhāmi (establishes, strengthens) acalāṃ śraddhām — unwavering faith — tāmin eva — in that very form.

Faith is a divine response, not mere human effort. Kṛṣṇa respects the free will and desires of each soul.