Melachim Alef 2:31-33

Orthodox Jewish Bible

³¹ And HaMelech said unto him, Do as he hath said, and fall upon him, and bury him; that thou mayest take away from me the demei chinnam (innocent blood), the shefach dahm of Yoav, even from against the Bais Avi.

³² And Hashem shall return his dahm upon his own rosh, who fell upon two anashim more tzadikim and tovim than he, and killed them with the cherev, Dovid Avi not knowing thereof: Avner Ben Ner, Sar Tzava Yisroel, and Amasa Ben Yeter, Sar Tzava Yehudah.

³³ Let their dahm therefore turn back upon the rosh Yoav, and upon the rosh of his zera l’olam; but upon Dovid, and upon his Zera, and upon his Bais, and upon his Kisse, let there be shalom ad olam from Hashem.