2 Samuel 4:10
When one told me, saying, Behold, Saul is dead, thinking to have brought good tidings, I took hold of him, and slew him in Ziklag, who thought that I would have given him a reward for his tidings:
Cross-reference
2 Samuel 1:2–16
Parallel
In 2 Samuel 1:2-16, David executed the Amalekite who claimed to kill Saul — the same pattern of punishing a messenger who killed God's anointed.
2 Samuel 1:15
Parallel
In 2 Samuel 1:15, David ordered the execution of the Amalekite who killed Saul — the identical response to a man claiming to kill God's anointed.
Job 31:29
Related theme
In Job 31:29, Job denies rejoicing at enemy's ruin, mirroring David's refusal to celebrate Saul's death.