Verse: Destroyed for lack of knowledge:

Hosea 3:6: My people are destroyed for lack of knowledge: because thou hast rejected knowledge, I will also reject thee, that thou shalt be no priest to me: seeing thou hast forgotten the law of thy God, I will also forget thy children.

That verse way written to Israel, but does it apply to us today?

Look at the things that the people were doing that were listed in Hosea.

swearing
lying
killing
stealing
committing adultery
blood toucheth blood (incest)

Do we, in this modern era, do these things? Do you do these things?

When I watch the news today, there's whole lot of swearing, and lying, and killing, and stealing, and committing adultery, and incest going on. Some of it done by people who should know better. They are destroyed for lack of knowledge.

But why don't they know better?

Because the folks they look to for guidance and advice and teaching don't teach them it's wrong. And that group of teachers are the people this verse is directed to. But notice the last sentence.

"I will also forget thy children." (The people they teach)

It makes a difference which teacher you pick. So read the Bible and see if the teacher is correct. There will (eventually) be a test, and you don't want to miss this question.