'Blood guiltiness' in the Bible

So now, my lord, as the Lord lives, and as your soul lives, since the Lord has prevented you from shedding blood, and from avenging yourself by your own hand, now then let your enemies and those who seek to do evil to my lord, be as [self-destructive as] Nabal.

And blessed be your discretion and discernment, and blessed be you, who has kept me from bloodshed this day and from avenging myself by my own hand.

Rescue me from bloodguiltiness, O God, the God of my salvation;Then my tongue will sing joyfully of Your righteousness and Your justice.

‘Prepare the chain [for imprisonment], for the land is full of bloody crimes [murders committed under the pretense of civil justice] and the city is full of violence.