If yes, just say yes, if no, just you say: no. What more than that comes from the Devil.
You have heard it said: An eye for an eye and a tooth for a tooth.
But I say to you: you shall not fight against who do evil to you, but anyone who slaps your right cheek, give him also your left cheek.
And if any man want your shirt, give your cloak too.
And who ever ask you to go a mile, go with him more than a mile.
Give to people who ask you and do not refuse people who want borrow from you.
You have heard the word: you shall love human and hate your enemy.
but I say to you: Love your enemies and pray for those who persecute you.
That you be children of your Father in heaven, who make the sun to the evil and the good, and sent rain on the bad and the good.
If you love those who love you, what is the reward? the tax collector also do that?
And if you only greet your brothers only, what make different from the others? Are not people who do not know God was doing so?
because of that you must perfect, like your Father in heaven is perfect. "