What you term as relativism, is in other words, responding to the needs of the people, in THIS time and in THIS place.  Jesus responded to the needs of the sick and suffering who came to him---even if it meant disregarding the 'not to be broken' divine laws of the Sabbath.  He healed a crippled woman on the Sabbath and he defended his hungry disciples plucking grains of wheat to eat---on a Sabbath.  Even a Divine Law, like the Sabbath, exists for flesh and blood people.