"And when the Jews heard these things they were angry with him: yea, even as with the prophets of old, whom they had cast out, and stoned, and slain; and they also sought his life, that they might take it away. But behold, I, Nephi, will show unto you that the tender mercies of the Lord are over all those whom he hath chosen, because of their faith, to make them mighty even unto the power of deliverance."
The Jews have many moments in the Bible which they despise the words of the prophets. Even as the whole of Israel with Moses they were condemned to 40 years in the wilderness due to iniquities. Of which each nation has its times of iniquity, no nation is exempt and all are given the opportunity to accept the truth of God.
The treatment of the prophets show the hardness of the hearts of the people and their inability to change. They refused to be in the wrong even when they knew the statures of God and knew the commandments. The connecting scripture of Jeremiah 11:19 says "like a lamb... to the slaughter." Christ is a great example of meekness. And also the prophet Joseph Smith said the same thing not long before he was martyred at Carthage jail. Lehi was warned that the people would try to take his life.
Because of the tender mercies of the Lord to His servant, Lehi, He provided a way for Lehi and his family to escape and save their lives. the Lord takes care of His servants in the ways that are best. Daniel was protected from the lions, and David from Goliath.