 This commandment demands respect for human life and is more accurately translated as " thou shalt not murder . " Indeed , killing may , under limited circumstances , be justified within Catholicism . Jesus expanded it to prohibit unjust anger , hatred and vengeance , and to require Christians to love their enemies . The basis of all Catholic teaching about the fifth commandment is the sanctity of life ethic , which Kreeft argues is philosophically opposed to the quality of life ethic , a philosophy which he characterizes as introduced by a book entitled Die Freigabe der Vernichtung des Lebensunwerten Lebens ( The Permission to Destroy Life Unworthy of Life ) ( see Life unworthy of life ) and which he asserts was the " first to win public acceptance ... by German doctors before World War II — the basis and beginning of Nazi medical practices . " This interpretation is supported by modern medical journals that discuss the dilemma posed by these opposing philosophies to physicians who must make life or death decisions . Some bioethicists characterize the use of the " Nazi analogy " as inappropriate when applied to quality of life decisions ; Arthur Caplan called this rhetoric " odiously wrong " . The Church is actively involved in the public debates over abortion , capital punishment and euthanasia , and encourages believers to support legislation and politicians it describes as pro @-@ life . 
 This commandment <a href='uninflect' title='1'><mark>demands</mark></a> respect for human life and is more accurately translated as " thou <a href='uninflect' title='2'><mark>shalt</mark></a> not murder . " Indeed , killing may , under limited circumstances , be justified within Catholicism . Jesus expanded it to prohibit unjust anger , hatred and vengeance , and to require Christians to love their enemies . The basis of all Catholic teaching about the fifth commandment <a href='drop_aux' title='3'><mark>is</mark></a>the sanctity of life ethic , which Kreeft <a href='uninflect' title='4'><mark>argues</mark></a> is philosophically opposed to the quality of life ethic , a philosophy which he <a href='uninflect' title='5'><mark>characterizes</mark></a> as introduced by a book entitled Die Freigabe der Vernichtung des Lebensunwerten Lebens ( The Permission to Destroy Life Unworthy of Life ) ( see Life unworthy of life ) and which he <a href='uninflect' title='6'><mark>asserts</mark></a> was the " first to win public acceptance ... by German doctors before World War II — the basis and beginning of Nazi medical practices . " This interpretation is supported by modern medical journals <a href='null_relcl' title='7'><mark>that</mark></a>discuss the dilemma posed by these opposing philosophies to physicians <a href='null_relcl' title='8'><mark>who</mark></a>must make life or death decisions . Some bioethicists characterize the use of the " Nazi analogy " as inappropriate when applied to quality of life decisions ; Arthur Caplan called this rhetoric " odiously wrong " . The Church is actively involved in the public debates over abortion , capital punishment and euthanasia , and <a href='uninflect' title='9'><mark>encourages</mark></a> believers to support legislation and politicians it <a href='uninflect' title='10'><mark>describes</mark></a> as pro @-@ life . 
Dis commandment demand respect fa human life and is more accurately translated as " thou shalted not murder . " Indeed , killin may , under limited circumstances , be justified within Catholicism . Jesus expanded it to prohibit unjust anger , hatred and vengeance , and to require Christians to love their enemies . The basis of all Catholic teaching about the fifth commandment da sanctity of life ethic , which Kreeft argue is philosophically opposed to the quality of life ethic , a philosophy which he characterize as introduced by a book entitled Die Freigabe der Vernichtung des Lebensunwerten Lebens ( The Permission to Destroy Life Unworthy of Life ) ( see Life unworthy of life ) and which he assert was tda" first to win public acceptance ... by German doctors before World War II — thdaasis and beginning of Nazi medical practices . " This interpretation is supported by modern medical journals discuss the dilemma posed by these opposing philosophies to physicians must make life or death decisions . Some bioethicists characterize the use of the " Nazi analogy " as inappropriate when applied to quality of life decisions ; Arthur Caplan called this rhetoric " odiously wrong " . The Church is actively involved in thedablic debates ova abortion , capital punishment and euthanasia , and encourage believers to support legislation and politicians it describe as pro @-@ life .