To understand what is written, “with a mighty hand, …and with fury poured out, will I be king over you,” we should understand that there is a rule that there is no coercion in spirituality, as it is written, “thou hast not called upon Me, O Jacob, neither hast thou wearied thyself about Me, O Israel.” There is a known interpretation by the Sayer of Duvna; hence, what does “with a mighty hand, …and with fury poured out, will I be king over you” mean?
He said that we should know that of those who want to enter God’s work in order to truly cleave unto Him and enter the King’s Palace, not every one is admitted. Rather, one is tested—if he has no other desires but only a desire for Dvekut (adhesion), he is admitted.
And how is one tested if he has only one desire? One is given obstructions. This means that he is sent alien thoughts and alien messengers to obstruct him so he would leave this path and follow the path of the populace.
And if one overcomes all the difficulties and breaks all the bars that block him, and little things cannot turn him off, then the Creator sends him great Klipot and chariots, to deflect one from admittance into adhesion with Him alone, and with nothing else. This is considered that the Creator is rejecting him with a mighty hand.
If the Creator does not show His mighty hand, it will be hard to turn him off, since he has a strong desire to cleave only to the Creator and to nothing else.
But when the Creator wants to repel one whose desire is not so strong, He turns him off with a slight thing. By giving him a great desire for corporeality, he already leaves the holy work entirely, and there is no need to repel him with a mighty hand.
Yet, when one overcomes the hardships and the obstructions, one is not easily repelled, but with a mighty hand. And if one overcomes even the mighty hand, and does not want to move from the place of Kedusha (Sanctity) whatsoever, and wants to cleave specifically onto Him in truth, and sees that he is being repelled, then one says that fury is poured out on him. Otherwise, he would be allowed inside. But because fury is poured out on him by the Creator, he is not admitted into the King’s Palace, to cleave onto Him in truth.
It follows that before one wants to move from one’s place, and breaks in and wants to enter, it cannot be said that one feels that fury is poured out on him. Rather, after all the rejections that he is rejected, when he does not move from his place, meaning when the mighty hand and the fury poured out have already been revealed upon him, then “will I be king over you.” This is so because only through bursting and great efforts does the Kingdom of Heaven become revealed to him, and he is allowed into the King’s Palace.