But I tell you that anyone who is angry with his brother will be subject to judgment.
Matthew 5:22
BSB
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Where murder begins
The law said: thou shalt not kill. Jesus goes a layer deeper. Murder doesn't begin with the knife, but with the anger in your heart and the insults in your mouth.
To be honest: the words without a cause are not in the oldest manuscripts. They were probably added later, perhaps to soften the saying a little. Without those words Jesus is even sharper. What matters to him is your heart.
Question for today
Who am I angry with, and what is it doing to my heart?
Prayer
Lord, you see my anger, even the anger I don't express. Heal my heart before it does damage. Amen.