Evidence for God from Science

Most...if not all the words that Job friends said, do ring true on their own accord.
Can a preacher use these passages to warn people about the danger of sin, or these passages could only be use to reflect the ignorance of Job friends to the real reason for Job plight?

Yes, why not? They are really good exhortations on 'cause and effect'.
The problem with Job's friends is that they were ignorant and claimed to speak on behalf of God. So, their error was false prophecy.

They would have been right...if Job had done the things they claimed he must have done. They assumed he did something wrong for God to punish him...though it was Satan who punished him for being such a godly person (though, actually, it comes out he was a little self-righteous....) Also, they were beating him down with the law, when they should have been building him up...