John Gills Exposition of the Bible Commentary - Jeremiah 41:11
But when Johanan the son of Kareah ,.... The same that is mentioned Jeremiah 40:8 ; and who had informed Gedaliah of Ishmael's designs against him, but he would not believe him: and all the captains of the forces that were with him ; his brother Jonathan, Seraiah, the sons of Ephai, and Jezaniah, Jeremiah 40:8 ; heard of all the evil that Ishmael the son of Nethaniah had done ; in murdering Gedaliah, and those that were with him, destroying seventy other persons he had decoyed,... read more
Matthew Henry's Complete Commentary - Jeremiah 41:11-18
It would have been well if Johanan, when he gave information to Gedaliah of Ishmael's treasonable design, though he could not obtain leave to kill Ishmael and to prevent it that way, yet had staid with Gedaliah; for he, and his captains, and their forces, might have been a life-guard to Gedaliah and a terror to Ishmael, and so have prevented the mischief without the effusion of blood: but, it seems they were out upon some expedition, perhaps no good one, and so were out of the way when they... read more