Luke 14:25-35 reads,
25And there went great multitudes with him: and he turned, and said unto them,
26If any
man come to me, and hate not his father, and mother, and wife, and children, and brethren, and sisters, yea, and his own life also, he cannot be my disciple.
27And whosoever doth not bear his cross, and come after me, cannot be my disciple.
28For which of you, intending to build a tower, sitteth not down first, and counteth the cost, whether he have
sufficient to finish
it?
29Lest haply, after he hath laid the foundation, and is not able to finish
it, all that behold
it begin to mock him,
30Saying, This man began to build, and was not able to finish.
31Or what king, going to make war against another king, sitteth not down first, and consulteth whether he be able with ten thousand to meet him that cometh against him with twenty thousand?
32Or else, while the other is yet a great way off, he sendeth an ambassage, and desireth conditions of peace.
33So likewise, whosoever he be of you that forsaketh not all that he hath, he cannot be my disciple.
34Salt
is good: but if the salt have lost his savour, wherewith shall it be seasoned?
35It is neither fit for the land, nor yet for the dunghill;
but men cast it out. He that hath ears to hear, let him hear.
We are told that Israel was given to us for an example. I would go as far to say all the individuals in the old testament are given to us for an example.
Lot's wife is a literal and physical example of salt being cast out because it is no good, is not fit. Why because she was not found worthy because as the verses prior point out she was not willing to forsake it all. Which family, father, mother, children, brother, and sister are specifically mentioned.