Deuteronomy 19:11-13
If, however, a man hates his neighbor and lies in wait, attacks him and kills him, and then flees to one of these cities, / the elders of his city must send for him, bring him back, and hand him over to the avenger of blood to die. / You must show him no pity. You are to purge from Israel the guilt of shedding innocent blood, that it may go well with you.

Exodus 21:12-14
Whoever strikes and kills a man must surely be put to death. / If, however, he did not lie in wait, but God allowed it to happen, then I will appoint for you a place where he may flee. / But if a man schemes and acts willfully against his neighbor to kill him, you must take him away from My altar to be put to death.

Joshua 20:3-5
so that anyone who kills another unintentionally or accidentally may flee there. These will be your refuge from the avenger of blood. / When someone flees to one of these cities, stands at the entrance of the city gate, and states his case before its elders, they are to bring him into the city and give him a place to live among them. / Now if the avenger of blood pursues him, they must not surrender the manslayer into his hand, because that man killed his neighbor accidentally without prior malice.

Genesis 9:6
Whoever sheds the blood of man, by man his blood will be shed; for in His own image God has made mankind.

Leviticus 24:17
And if a man takes the life of anyone else, he must surely be put to death.

1 Kings 2:5-6
Moreover, you know what Joab son of Zeruiah did to me—what he did to Abner son of Ner and Amasa son of Jether, the two commanders of the armies of Israel. He killed them in peacetime to avenge the blood of war. He stained with the blood of war the belt around his waist and the sandals on his feet. / So act according to your wisdom, and do not let his gray head go down to Sheol in peace.

2 Samuel 14:6-7
And your maidservant had two sons who were fighting in the field with no one to separate them, and one struck the other and killed him. / Now the whole clan has risen up against your maidservant and said, ‘Hand over the one who struck down his brother, that we may put him to death for the life of the brother whom he killed. Then we will cut off the heir as well!’ So they would extinguish my one remaining ember by not preserving my husband’s name or posterity on the earth.”

2 Kings 21:16
Moreover, Manasseh shed so much innocent blood that he filled Jerusalem from end to end, in addition to the sin that he had caused Judah to commit, doing evil in the sight of the LORD.

Psalm 10:8-10
He lies in wait near the villages; in ambush he slays the innocent; his eyes watch in stealth for the helpless. / He lies in wait like a lion in a thicket; he lurks to seize the oppressed; he catches the lowly in his net. / They are crushed and beaten down; the helpless fall prey to his strength.

Proverbs 6:16-19
There are six things that the LORD hates, seven that are detestable to Him: / haughty eyes, a lying tongue, hands that shed innocent blood, / a heart that devises wicked schemes, feet that run swiftly to evil, ...

Matthew 5:21-22
You have heard that it was said to the ancients, ‘Do not murder’ and ‘Anyone who murders will be subject to judgment.’ / But I tell you that anyone who is angry with his brother will be subject to judgment. Again, anyone who says to his brother, ‘Raca,’ will be subject to the Sanhedrin. But anyone who says, ‘You fool!’ will be subject to the fire of hell.

Matthew 15:19
For out of the heart come evil thoughts, murder, adultery, sexual immorality, theft, false testimony, and slander.

Mark 7:21-23
For from within the hearts of men come evil thoughts, sexual immorality, theft, murder, adultery, / greed, wickedness, deceit, debauchery, envy, slander, arrogance, and foolishness. / All these evils come from within, and these are what defile a man.”

Luke 11:50-51
As a result, this generation will be charged with the blood of all the prophets that has been shed since the foundation of the world, / from the blood of Abel to the blood of Zechariah, who was killed between the altar and the sanctuary. Yes, I tell you, all of it will be charged to this generation.

John 8:44
You belong to your father, the devil, and you want to carry out his desires. He was a murderer from the beginning, refusing to uphold the truth, because there is no truth in him. When he lies, he speaks his native language, because he is a liar and the father of lies.