From the parable of the wicked tenants:
And the tenants took his servants, and beat one, and killed another, and stoned another.
Matthew 21: 35
To move from beating to killing shows a clear escalation of violence, but the consummation of this is not murder but and unjust stoning, that is, a murder with legal and religious justifications. It’s sad, horrible, and familiar to envision how the first two envoys that the owner sent met with angry mobs bearing pitchforks, torches and lynch ropes while the third envoy was arrested, given a trial, subjected to a reading of religious texts that justified his execution, etc.