Krsna, although left this planet, and if He is everything, how Krsna can go away? Krsna can remain with you eternally. And even if you say that “Because Krsna went away, therefore Kali got the chance of entering,” but if you keep yourself with Krsna, where is the chance of Kali to enter? Where is the chance? So you keep yourself in Krsna consciousness. Kali will not be able to touch you.
From Srila Prabhupada’s lecture on Srimad-Bhagavatam 1.15.36 — December 14, 1973, Los Angeles