The Last State Has Been Worse for You Than Before You Ever Heard

The Bible says it would have been better for them never to have known the way of righteousness than after knowing it to turn back from the Holy Commandment delivered to them. The dog returns to its own vomit and the sow after washing herself returns to wallow in the mire. These are scary passages to me, aren't they? I mean, it just creates this weird like thing where the Bible is clear.