It is important to understand that the Rigveda is not a casual work. One has to have a rudimental level of spiritual capability before attempting to unearth the deeper secrets hidden in the bosom of the book. The RigVeda is definitely not for popular consumption. It is a sacrifice that can be only undertaken by the individual who is vying for the highest Truth.
In this great sacred ambit, of the Rigveda,nothing is as it is appears on the surface. The teachings of the RigVeda appears to be veiled from the outer mind. Its teachings are under a clout and inaccessible to the non-devoted, as if locked by some sacred formulae.