To whom God would make known what is the riches of the glory of this mystery among the Gentiles....
Colossians 1:27
"IT is absolutely impossible to exhaust any portion of Scripture. 
The more one studies it, the more one sees in it, and not only that, but the more one becomes conscious of the fact that there is much more in it than appears to view.
The Word of God, like Himself, is absolutely unfathomable."
E.J. Waggoner