“Guru is there to decide whether something is applicable for us or not, because he is taking that responsibility, the disciple also take vows to follow his instruction. So if you follow the instructions of a bonafide guru, he will get you back to Godhead.
But if one doesn’t follow, then how the Guru can get you back? If someone is having doubt, they should get that doubt clarified as quickly as possible. First with the vaishnavas, if not possible then go to the Guru and get your doubt clarified.
Guru is the one Supreme Court, the final verdict. Whatever the decision then the disciple follows that.
Otherwise sometimes it gets confusing also in ISKCON there may be may spiritual masters and sometimes they give different instruction for a devotee. Someone says, yes you should get married, someone says you should not get married, someone says you should do this, you should do that! Then one gets confused what should I do?
So then the spiritual master can clarify, because the Spiritual Master has taken the commitment, ‘I have to get you back to Krishna, even if it means that I have to take birth again to get you back!.’So he has taken responsibility.
So it’s important that we have proper spiritual master. That’s a single important decision. Ofcourse to take in the bonafide disciplic succession and get the mercy of Prabhupada and Krishna, take initiation eventually from the bonafide spiritual master and keep on serving under the shelter of the entire Guru Parampara.”HH Jayapataka Swami Vyasa Puja Lecture