Prabhupada: A Krsna consciousness person, even if he’s found in fault, Krsna says, “No.” “He’s saintly person, sadhu.” Why?

Now, the process he has taken up, that will cure him in due course of time.

So those who have fortunately come to this platform of Krsna consciousness by association, by practice, this is the way.

So stick to it. Don’t go away.

Even if you find some fault, don’t go away from the association.

Struggle, and Krsna will help you.”

[His Divine Grace A.C Bhaktivedanta Swami Prabhupāda-Initiation Lecture -December 26, 1969, Boston]

and from the Bhagavad-gita:

I envy no one, nor am I partial to anyone. I am equal to all. But whoever renders service unto Me in devotion is a friend, is in Me, and I am also a friend to him. (Bg 9.29)

Even if one commits the most abominable actions, if he is engaged in devotional service, he is to be considered saintly because he is properly situated. (Bg 9.30)