Krishna avatar is a unique incarnation that reveals to devotees with ease the Lord’s Supreme State, pointed out Kalyanapuram Sri R. Aravamudhachariar in a discourse.
In many instances, Krishna allows people a glimpse of His greatness but also casts the veil of Maya to bring them back to this world. It is a marvellous experience for the simple folk of Vraja to feel the impact of His Paratva and Saulabhya that are inseparable in Him. The sages Garga and Narada tell Nandagopa that Krishna is no ordinary child. How else could each of the killers sent by Kamsa to kill Krishna get killed? Yasodha is overawed by the Viswarupa form child Krishna reveals to her within His mouth; but she is soon made to revert to her role as a mother.
Brahma and Indra realise Krishna’s Paratva after being deluded to believe Him to be a mere cowherd boy. It so happens that once Nandagopa is kidnapped by an asura for bathing in the waters of the Yamuna in the dead of night which is the time allotted for asuras. He is taken to Varuna Loka and Krishna rescues him from there. Nandagopa returns and tells the people about how Krishna is revered and worshipped by Varuna in the most humble manner. The people wonder at the supreme greatness of the small boy who leads a simple life with them and pray for His grace.
Krishna then reveals to them a vision of Vaikunta, His heavenly abode. They see Krishna there in all His transcendental glory, and for a brief period, are immersed in the ocean of Sat-chit-ananda, a state of release from all bondage. They are then brought back to their material world from this state of spiritual existence. Individual souls feel a similar impact when subject to occasional brushes with Truth.
