Welcome to Dhamma Wheel!
Can you clarify what you know of the "4 states to nibbana" as I've not come across this expression before?
The first thing that comes to mind is the four levels of noble ariyan Sangha (stream-entrant, once-returner, non-returner, arahant) but wonder whether you're asking about the 4 Noble Truths, the 4 Divine Abidings or some else altogether.
“I hope, Anuruddha, that you are all living in concord, with mutual appreciation, without disputing, blending like milk and water, viewing each other with kindly eyes.” (MN 31)
What is the final conviction that comes when radical attention is razor-edge sharp? That the object of the mind is mind-made (manomaya). (Ven. Ñāṇananda)
"If you have always believed that everyone should play by the same rules and be judged by the same standards, that would have gotten you labeled a radical 50 years ago, a liberal 25 years ago and a racist today." (Thomas Sowell)