Luke 6:33-35

If you do good to those who do good to you, what credit is that to you? For even sinners do the same. If you lend [money] to those from whom you expect to receive [it back], what credit is that to you? Even sinners lend to sinners expecting to receive back the same amount. But love [that is, unselfishly seek the best or higher good for] your enemies, and do good, and lend, expecting nothing in return; for your reward will be great (rich, abundant), and you will be sons of the Most High; because He Himself is kind and gracious and good to the ungrateful and the wicked.