One of the main reasons for displeasure and withdrawal of mercy is because one takes shiksha from someone from another parampara who, in most cases, has no faith or little faith or just pretending to have faith in the nitya-siddha position of our recent parampara acharyas like Bhaktivinoda, Bhaktisiddhanta, and Bhaktivedanta. Obviously, this is an offense to them. nitya-siddha kari mane… If Rupa Goswami was present now, he would have himself accepted them as Kamal manjari and Nayan-mani manjari, because siddhas know other siddhas. Undortunately most of those outside our dhara have no such faith. Then why should we hear from them? That is not chastity to our dhara! There is no proof required for this. Is it not common-sense?
The very fact that we are listening to someone not in our Bhaktivinoda Bhaktisiddhanta dhara means that either we have no faith that their teachings can give us everything, or that we think there is no one in their dhara who is understanding and presenting their teachings purely. Will this not displease them? Will it not alienate them from us? Of course, it will. Why should they still continue to accept the responsibility to bring us into the nitya-lila when their teachings are not the only hope for us. Also, we can always read our scriptures ourselves with their commentaries, if we feel there is no one living who is purely presenting their teachings to us.
One has to deeply study the books and writings of Shrila Bhaktivinoda Thakur and Shrila Bhaktissidhanta Sarasvati first because the conclusions of all the writings of the Goswamis are there. And then study the books of the Goswamis. Then we will be able to know who is speaking the same siddhanta as our dhara.
We should first develop full faith that the writings and songs of our Kamal Manjari Shrila Bhaktivinoda Thakur are the most direct essence of the the writings of our Goswamis, by studying them deeply ourselves. Almost everything is covered in them. And since they are in Bengali, they are much more easier to understand than the Sanskrit writings of our Goswamis. So after studying them, we should read the writings of our Goswamis. And since we got such a supreme treasure, we don‘t need to hear from someone who is not deeply immersed in the writings of Shrila Bhaktivinoda Thakur. This is because it is very easy to find rasabhas and apasiddhanta. Bhaktivinoda Thakur himself had to clean up the verses of the versions of CB and CC found in the market with the help of Jagannatha das babaji, before publishing them. In our unqualified condition, we will never be able to understand any rasabhas or apasiddhanta from other sources and we will accept them as the truth. This is highly displeasing to our guruvarga. So better be safe than be sorry! Better stick to the teachings of our guruvarga!
One should accept diksha in a bona-fide guru parampara only after being convinced that the teachings of the acharyas in that parampara can award everything. Because if later one goes outside a pure bona-fide parampara to someone else, to get what one thinks one deserves, the parampara acharyas will withdraw their mercy and responsibility to bring that soul into the nitya-lila. Such a forsaken and unchaste soul is even more unfortunate than those who have not accepted shelter of a guru parampara at all.
One is no longer a sva-jatiya devotee for all the devotees of a guru parampara if one thinks that there is something more to get outside the teachings of that pure guru parampara. Such a devotee is still respected with all humility. But how can one remain truly snigdha or affectionate from the bottom of one’s heart to someone who is not patient enough to remain chaste to one’s pure parampara, and thus ends up displeasing the parampara acharyas.
Even if all our godbrothers, godsisters, or goduncles blaspheme and reject us, still how can we even think of abandoning our guru parampara, which is always with us, merciful upon us, and our only shelter?
According to our paramgurdeva Shrila Bhaktisiddhanta Prabhupada, our bhagavat shiksha parampara in the Gaudiya sampradaya, where every acharya has a diksha guru also, and which is it is not limited to only family lines, is pure. If you want to hear from other Gaudiya dharas which have not been specifically authorized by our paramagurdeva, than you are free to do that at your own risk. Remember that Bhaktivinoda Thakur listed the 13 apasampradayas and they are in Gaudiya only, not in other dharas, so it would very hard to distinguish in our Gaudiya line.