חסידות אויף תהילים 78:63

And it is possible that the verse also hints to this above in Parshat Shemini, when it states, "and they brought before the Lord a strange fire, which He had not commanded them": For the Sages, may their memory be blessed said (Yoma 21b), "A fire that consumes fire, that is the fire of the Holy One, blessed be He." The explanation is that someone who has that which is like a fire of flame of the fire of Holy One, blessed be He, burning in his heart for God, that is the fire that consumes fire. The explanation [to this explanation] is that sometimes the burning fire [in a person] that is on account of trembling, trepidation and fear subsides, so that one must hide his face. But they did not do like this, and they were burning with a fire of love, without fear. And that is the strange fire, which He had not commanded them. For the fire of the Holy One, blessed be He, is specifically fire that consumes fire. And therefore, "A fire came forth from before the Lord and consumed them." For it is well known that arousal from below causes arousal from Above. And [with] everything that a person does on Earth, likewise, as it were, does the Holy One, blessed be He, do above corresponding to it, whether for the good or for the opposite, God forbid. So when they aroused themselves with love of burning desire of a fiery flame towards their King, may He be blessed, likewise did a fire come out from in front of the Holy One, blessed be He, towards them in His love for them and consumed them with the burning of the soul, but the body intact, like the statement of the Sages, may their memory be blessed (Sanhedrin 52a). That is to say that their souls departed before the light of the Bonfire and were subsumed there, so the light ceased to light up for them. And they died before the Lord, since their souls went out with a breath, with the death of the kiss, with total light, in the light of the Lord. And it is to this that the Sages hinted to [when they said] that they did not marry wives, etc. For the aspect of fear in the verse (Proverbs 31:30), "a woman with the fear of the Lord," is intended to be about the aspect of the Feminine in the secret of the verse, as is well known. They did not marry wives, since they did not enter into the flesh of fear, as it is stated (Psalms 78:63), hence "Fire consumed their young men" because "their maidens remained unwed." As they did not turn their faces from looking at God out of their fear. So the fire consumed their candles in the light of the Bonfire. And it possible that they were also hinting to this when they, may their memory be blessed, said (Vayikra Rabbah 20:9), "They entered drunk." For it is well known that the aspect of wine that brings joy is the trait of 'guarded wine,' from His grapes. As the love towards God is very potent and powerful there, as is well known to those who taste from the Tree of Life. So they died from this great love without being preceded by fear, like the matter that has been said.