The sixth commandment forbids murder and promotes our responsibility to value and preserve life. This includes our thoughts and attitudes towards others not just the physical act of killing.

Exodus 20:13

13 “You shall not murder.¹

Footnotes

[1] 20:13 The Hebrew word also covers causing human death through carelessness or negligence

(ESV)

Matthew 5:21–26

Anger

21 “You have heard that it was said to those of old, ‘You shall not murder; and whoever murders will be liable to judgment.’ 22 But I say to you that everyone who is angry with his brother¹ will be liable to judgment; whoever insults² his brother will be liable to the council; and whoever says, ‘You fool!’ will be liable to the hell³ of fire. 23 So if you are offering your gift at the altar and there remember that your brother has something against you, 24 leave your gift there before the altar and go. First be reconciled to your brother, and then come and offer your gift. 25 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. 26 Truly, I say to you, you will never get out until you have paid the last penny.⁴

Footnotes

[1] 5:22 Some manuscripts insert without cause
[2] 5:22 Greek says Raca to (a term of abuse)
[3] 5:22 Greek Gehenna; also verses 29, 30
[4] 5:26 Greek kodrantes, Roman copper coin (Latin quadrans) worth about 1/64 of a denarius (which was a day’s wage for a laborer)

(ESV)