The living entity, while executing devotional service or transcendental rituals after many, many births, may actually become situated in transcendental pure knowledge that the Supreme Personality of Godhead is the ultimate goal of spiritual realization. In the beginning of spiritual realization, while one is trying to give up one's attachment to materialism, there is some leaning towards impersonalism, but when one is further advanced he can understand that there are activities in the spiritual life and that these activities constitute devotional service. Realizing this, he becomes attached to the Supreme Personality of Godhead and surrenders to Him. At such a time one can understand that Lord Sri Krsna's mercy is everything, that He is the cause of all causes and that this material manifestation is not independant from Him. He realizes the material world to be a perverted reflection of spiritual variegatedness and realizes that in everything there is a relationship with the Supreme Lord Krsna. Thus he thinks of everything in relation to Vasudeva, or Sri Krsna. Such a universal vision of Vasudeva precipitates one's full surrender to the Supreme Lord Sri Krsna as the highest goal. Such surrendered great souls are very rare.