Question 105: What does God require in the sixth commandment?
Answer: That neither in thoughts, nor words, nor gestures, much less in deeds, I dishonour, hate, wound, or kill my neighbour, by myself or by another: but that I lay aside all desire of revenge: also, that I hurt not myself, nor wilfully expose myself to any danger. Wherefore also the magistrate is armed with the sword, to prevent murder.
Q 106: But this commandment seems only to speak of murder?
Answer: In forbidding murder, God teaches us, that he abhors the causes thereof, such as envy, hatred, anger, and desire of revenge; and that he accounts all these as murder.
d: 1 John 3:15
Q 107: But is it enough that we do not kill any man in the manner mentioned above?
Answer: No: for when God forbids envy, hatred, and anger, he commands us to love our neighbour as ourselves; to show patience, peace, meekness, mercy, and all kindness, towards him, and prevent his hurt as much as in us lies; and that we do good, even to our enemies.
c: Exodus 23:5