I believe that if a man will do good with others not just for formality in front of others but by heart and with kind. Then he will get the same return either from those people or may not necessary from those people. But he will get this return from some others.

I have noticed this in my personal life an agree that those do good with other people and some times they do not get the same in short time or in quick way. But he should not think negative and this will help him in some other times and other places where people will do good with this person and then he should realize that it was on my good giving results.

Many people may not trust on this and they only show formality in front of others that he is kind heart but in realty it may not, so having no any benefit of this act.