Melachim Alef 2:32

And HASHEM shall return his dahm upon his own rosh, who fell upon two anashim more tzaddikim 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.