Yeremia 40:15

40:15 Then Johanan son of Kareah spoke privately to Gedaliah there at Mizpah, “Let me go and kill Ishmael the son of Nethaniah before anyone knows about it. Otherwise he will kill you ¹  and all the Judeans who have rallied around you will be scattered. Then what remains of Judah will disappear.”

Yeremia 41:11

Johanan Rescues the People Ishmael Had Carried Off

41:11 Johanan son of Kareah and all the army officers who were with him heard about all the atrocities ²  that Ishmael son of Nethaniah had committed.

[40:15]  ¹ tn Heb “Why should he kill you?” However, this is one of those cases listed in BDB 554 s.v. מָה 4.d(b) where it introduces a question introducing rhetorically the reason why something should not be done. In cases like this BDB notes that it approximates the meaning “lest” and is translated in Greek by μήποτε (mhpote) or μή (mh) as the Greek version does here. Hence it is separated from the preceding and translated “otherwise” for the sake of English style.

[41:11]  ² tn Or “crimes,” or “evil things”; Heb “the evil.”