Nadav and Avihu that brought sacrifice to the Holy Tabernacle on the day it was initiated. They wanted to draw the ‘Great’ light to the world and complete the correction of the world. They had pure intention and yet, God took their souls that later transferred to Pinchas
The Zohar explains that because they were flawed because they were not married and the Shechinah couldn’t join them. Their sacrifice was incense, which is on a level higher than all sacrifices. For that type of sacrifice, they had to be in perfect state with ability to draw and continue the light to the world. Because they didn’t have children, their vessel was without experience of continuation of light to the world.
In such state, they were not worthy of channeling the great light that the world could have been blessed by it.
The main teaching of this Zohar is that we always need a proper vessel to receive the light. We start by purifying our vessel by following the Torah and the Zohar studies. The aspect of sharing everything we have is good for us because it continues the blessings of the Light.
Many people have the Zohar at home, learned how to say the Ana BeKoach and expect to control the entire spiritual system and make miracles like rabbi Shimon or other great Kabbalists. I’m sorry to say that but they are very wrong. The Holy Ari said that wrong prayers can even bring judgments on people.
When we pray we should imagine as if we stand in front of the King, asking for a favor. We should be at our best behavior, clean and humble before asking for our wish to be granted.
The King wants to spread good in his kingdom and if one ask for others he have better chance to be heard and get his wish answered first. If we do ask for others and not receive any, our request is heard and considered by the King. if we are not worthy to receive the King’s kindness on that time, he will keep our requests in his ‘records’. As we come again and again asking for others first while improving our ‘worthiness’, we will be answered.