"I forgive her completely – I would turn the other cheek, I would give my cloak if my coat be taken. I only pray God not to deprive me of the joy of forgiving!’"
Here Tolstoy tries to paint the perfect Christian in Karenin. The isdea of turning the other cheek or giving the cloak in addition to the coat is in reference to the Biblical teachings of Christ against revenge. He forgives Anna and this torments her further and even makes Vronsky to attempt suicide.