Q. 75. What is forbidden in the sixth commandment?
A. The sixth commandment forbids the taking away our own life, or the life of our neighbor unjustly, or whatsoever tends thereto.
And the Lord said, “What have you done? The voice of your brother’s blood is crying to me from the ground. And now you are cursed from the ground, which has opened its mouth to receive your brother’s blood from your hand.
“Whoever sheds the blood of man,
by man shall his blood be shed,
for God made man in his own image.
“You have heard that it was said to those of old, ‘You shall not murder; and whoever murders will be liable to judgment. ’ But I say to you that everyone who is angry with his brother will be liable to judgment; whoever insults his brother will be liable to the council; and whoever says, ‘You fool! ’ will be liable to the hell of fire. So if you are offering your gift at the altar and there remember that your brother has something against you, leave your gift there before the altar and go. First be reconciled to your brother, and then come and offer your gift. Come to terms quickly with your accuser while you are going with him to court, lest your accuser hand you over to the judge, and the judge to the guard, and you be put in prison. Truly, I say to you, you will never get out until you have paid the last penny.