Chasidut su Esodo 6:2

And El-him spoke to Moshe, etc (Exodus 6:2) - Seems to us that [we should] explain what is in the Gemara "the wicked:their beginning is harmony and their end is suffering but the righteous: their beginning is suffering and their end is harmony" (See Genesis Rabbah 66:4). There is to say that the righteous need to serve the Blessed Creator from the beginning with awe and guard oneself from [being manipulated by] the impulse for evil, and to break every physical appetite, and this is "their beginning is suffering" and after one has merited to break every appetite and one's enemy - this is the impulse for evil - he is in peace with himself, the "their end is harmony".