A Wilderness is commonly a waste, wild, and barren place, some of which are of a vast bigness:  this World is of a vast bigness, and very barren of grace and holiness.
This simile alludes to the legal type of the High-Priest, who might marry none but a Virgin.
The six-day creation story as found in Genesis (along with the seventh day of rest) provides a perfect picture of the seven dispensations as generally taught by dispensationalists.  Match each day of creation with the corresponding dispensation and you see some very interesting parallels.
Among the many things Christ is compared to in the holy scripture, to set forth his transcendent excellency, beauty, usefulness, and perfections, this of a Fountain is none of the least, it being a most profitable metaphor.
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.
