Jesus said

But If you are willing to listen,
 I say, love your enemies. 
 Do good to those who hate you.  Pray for the happiness 
of those who curse you.  Pray for those who hurt you. 
 If someone slaps you on one cheek, turn the other 
cheek.  If someone demands your coat, offer your shirt
 also.  Give what you have to anyone who asks you for it;
 and when things are taken away from you, donít try to 
get them back.  Do for others what you would like them 
to do for you. 

 Do you think you deserve credit for merely loving those 
who love you?  Even the sinners do that! And if you do 
good only to those who do good to you, is that so wonderful? 
 Even sinners do that much! And if you lend money only to 
those who can repay you, what good is that?  Even sinners
 will lend to their own kind for a full return.  

Love your enemies!  Do good to them!  And donít be 
concerned that they might repay.  Then your reward 
in heaven will be very great, and you will truly be acting 
as children of the Most High, for he is kind to the unthankful 
and to those who are wicked.  You must be compassionate,
 just as your Father is compassionate.

Stop judging others, and you will not be judged. 
 Stop criticizing others, or it will come back on you.
  If you forgive others, you will be forgiven.  If you give,
 you will receive.  Your gift will return to you in full 
measure, pressed down, shaken together to make
 room for more, and running over. 

Whatever measure you use in giving-- large or small-- it will be used to measure what is given back to you.

Luke 6:27-38 Living Bible Translation