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.

And the Pharisee who did call him, having seen, spake within himself, saying, 'This one, if he were a prophet, would have known who and of what kind is the woman who doth touch him, that she is a sinner.'

They were all astonished and in awe, and began saying to one another, “What is this message? For with authority and power He commands the unclean spirits and they come out!”

if you return one kind office by another, where's the obligation? the heathen themselves do as much.