Ecclesiastes declares the absolute vanity of all things under the sun. Biblical vanity does not refer to an excessive care on good looks. Biblical vanity is emptiness or worthlessness.
There is no higher name or title to set forth dignity amongst men, than kings or mighty potentates.
The gap in Genesis is one of those subjects over which many believers will split. Yet, it is the only explanation for several supposed contradictions.
There is another Bible doctrine that some call Spirit baptism. But it is not Spirit baptism. The scriptures never call it a baptism at all. That is the filling of the Spirit.
