In short, I'm looking for sources from anywhere that speaks about the severity of insulting an almana and all that surrounds this topic, what the "punishment" might be, what teshuva can be done, etc. ...
Where does the concept of Ben Adam Lemakom and Ben Adam Lechavero come from? I know there is a concept of the first five of the ten commandments being between 'man and his friend' and the second ...
From where do we know that one must be "dan" someone "l'caf zechut"? (that we must judge someone favorably even though from a certain act it might seem they are doing something?