Vijay: "I have to do my various duties in the Brahmo Samaj; that is why I can't always come here. But I shall visit you whenever I find it possible."
Sri Ramakrishna (to Vijay): "The task of a religious teacher is indeed difficult. One cannot teach men without a direct command from God. People won't listen to you if you teach without such authority. Such teaching has no force behind it. One must first of all attain God through spiritual discipline or some other means. Thus armed with authority from God, one can deliver lectures.
"After receiving the command from God, one can be a teacher and give lectures anywhere. He who receives authority from God also receives power from Him. Only then can he perform the difficult task of a teacher.
"An insignificant tenant was once engaged in a lawsuit with a big landlord. People realized that there was a powerful man behind the tenant. Perhaps another big landlord was directing the case from behind. Man is an insignificant creature. He cannot fulfil the difficult task of a teacher without receiving power direct from God."
Vijay: "Don't the teachings of the Brahmo Samaj bring men salvation?"
Sri Ramakrishna: "How is it ever possible for one man to liberate another from the bondage of the world? God alone, the Creator of this world-bewitching maya can save men from maya. There is no other refuge but that great Teacher, Satchidananda. How is it ever possible for men who have not realized God or received His command, and who are not strengthened with divine strength, to save others from the prison-house of the world?
"One day as I was passing the Panchavati on my way to the pine-grove, I heard a bullfrog croaking. I thought it must have been seized by a snake. After some time, as I was coming back, I could still hear its terrified croaking. I looked to see what was the matter, and found that a water-snake had seized it. The snake could neither swallow it nor give it up. So there was no end to the frogs suffering. I thought that had it been seized by a cobra it would have been silenced after three croaks at the most. As it was only a water-snake, both of them had to go through this agony. A man's ego is destroyed after three croaks, as it were, if he gets into the clutches of a real teacher. But if the teacher is an 'unripe' one, then both the teacher and the disciple undergo endless suffering. The disciple cannot get rid either of his ego or of the shackles of the world. If a disciple falls into the clutches of an incompetent teacher, he doesn't attain liberation."
Source: Gospel of Sri Ramakrishna