Book of Mormon; God Commanded Jews to Flee to Wilderness?

1 Nephi 17:47; Wherefore, the Lord commanded my father that he should depart into the wilderness; and the Jews also sought to take away his life…

Jeremiah 42:9-11; And said unto them, Thus saith the LORD, the God of Israel, unto whom ye sent me to present your supplication before him; 10 If ye will still abide in this land, then will I build you, and not pull you down, and I will plant you, and not pluck you up: for I repent me of the evil that I have done unto you.  11 Be not afraid of the king of Babylon, of whom ye are afraid; be not afraid of him, saith the LORD: for I am with you to save you, and to deliver you from his hand.

(See vs. 7-22 for full story)

Why would Jews seek to kill other Jews, especially at this time in the history of Jerusalem?  The Babylonians were out to kill the Israelites, not their own people!