The essence of vedanta/vedas etc. is only understood by this one line put forth by Sriman Gauranga Mahaprabhu:
"Shastra veda kahe sambandha abhidheya prayojana: Krisna,Krsna Bhakti,Prem..ye teen mahadhon."

In the vedas,only three things are to be understood.
the relationship of the living entity with Sri krsna/bhramn.
The process of attaining Bhramn/sri krsna: bhakti.
And the super excellent fruit of sadhana bhakti : Prema Bhakti.

Besides these three,everything else is not useful for the supreme well being of a jeevatma.