And David said unto him, Thy blood be upon thy head; for thy mouth hath testified against thee, saying, I have slain the LORD’s anointed.
Here is, I. David's reception of these tidings. So far was he from falling into a transport of joy, as the Amalekite expected, that he fell into a passion of weeping, rent his clothes (Sa2 1:11), mourned and fasted (Sa2 1:12), not only for his people Israel and Jonathan his friend but for Saul his enemy.
Commenting on 2 Samuel 1:11-16
And David said unto him, thy blood be upon thy head,.... The blood that he had shed, let him suffer for it; for as he had shed blood, his blood ought to be shed, according to the law of God; and for proof of this, that he had so done, he appeals to his own confession: for thy mouth hath testified against thee, saying, I...
And David said unto him, Thy blood [be] upon thy head; for thy mouth hath testified against thee, saying, I have slain the LORD'S anointed. (f) You are justly punished for your fault.