A Consistent Biblical Ethic,  by G. Thomas Hobson, Ph. D. Hobson is a PCUSA pastor and adjunct professor at Morthland College in IL.  Hobson carefully explains the link between OT interpretation of the Law and the NT interpretation.  Hobson writes, "In contemporary ethical debate, it is common to hear commands from the Bible being indiscriminately lumped together. We hear people say, “The Torahforbids homosexual behavior, but it also forbids wearing mixed fabric, and eating leavened bread during Passover. It’s all a hopeless jumble, useless as any reliable source of ethical guidance.” Many are those who claim that the Bible teaches no consistent sexual ethic, but endorses polygamy, concubinage, prostitution, and even incest."  He continues, "Every Torah command that carries a death penalty, is reaffirmed by the NT as a binding moral principle. The NT does not command us to execute incorrigible teenagers, but it does affirm the command, “Honor yourfather and mother.” Commands in the Torah that do not carry a death penalty, such as the kosher food laws, are not reaffirmed in the NT, and may be taken as commands that are just for Israel."  Nov/Dec 2011 Theology Matters, p. 12