Five Durations Of Time Where Bhakti-Yoga Is Purifying

“Krishna consciousness can be attained in one second, or it cannot be had even after a thousand births and deaths. If we choose, we can immediately become great souls by surrendering to Krishna, but because we have doubts whether or not Krishna is actually the Supreme we have to take time to dissipate these doubts through study of the scriptures.” (Shrila Prabhupada, Raja-Vidya, Ch 7)