Q. 1268. {365} What is forbidden by the fourth Commandment?  A. The fourth Commandment forbids all disobedience, contempt, and stubbornness towards our parents or lawful superiors.

Q. 1269.  What is meant by contempt and stubbornness?  A. By contempt is meant wilful disrespect for lawful authority, and by stubbornness is meant wilful determination not to yield to lawful authority.

Q. 1270. {366} What is the fifth Commandment? 
A. The fifth Commandment is:  Thou shalt not kill.

Q. 1271.  What killing does this commandment forbid? 
A. This commandment forbids the killing only of human beings.

Q. 1272.  How do we know that this commandment forbids the killing only of human beings?  A. We know that this commandment forbids the killing only of human beings because, after giving this commandment, God commanded that animals be killed for sacrifice in the temple of Jerusalem, and God never contradicts Himself.

Q. 1273. {367} What are we commanded by the fifth Commandment?  A. We are commanded by the fifth Commandment to live in peace and union with our neighbor, to respect his rights, to seek his spiritual and bodily welfare, and to take proper care of our own life and health.

Q. 1274.  What sin is it to destroy one’s own life, or commit suicide, as this act is called?  A. It is a mortal sin to destroy one’s own life or commit suicide, as this act is called, and persons who wilfully and knowingly commit such an act die in a state of mortal sin and are deprived of Christian burial.  It is also wrong to expose one’s self unnecessarily to the danger of death by rash or foolhardy feats of daring.

Q. 1275.  Is it ever lawful for any cause to deliberately and intentionally take away the life of an innocent person?  A. It is never lawful for any cause to deliberately and intentionally take away the life of an innocent person.  Such deeds are always murder, and can never be excused for any reason, however important or necessary.

Q. 1276.  Under what circumstances may human life be lawfully taken?  A. Human life may be lawfully taken (1) In self-defense, when we are unjustly attacked and have no other means of saving our own lives; (2) in a just war, when the safety or rights of the nation require it; (3) by the lawful execution of a criminal, fairly tried and found guilty of a crime punishable by death when the preservation of law and order and the good of the community require such execution.

Q. 1277. {368} What is forbidden by the fifth Commandment?  A. The fifth Commandment forbids all wilful murder, fighting, anger, hatred, revenge, and bad example.

Q. 1278.  Can the fifth commandment be broken by giving scandal or bad example and by inducing others to sin?  A. The fifth commandment can be broken by giving scandal or bad example and inducing others to sin, because such acts may destroy the life of the soul by leading it into mortal sin.