Complex sentence: The early Vedic religious understanding of Brahman underwent a series of abstractions in the Hindu scriptures that followed the Vedic scriptures; those scriptures revealed a vast body of insights into the nature of Brahman as originally revealed in the Vedas.
Split into simpler sentences: The early Vedic religious understanding of Brahman underwent a series of abstractions in the Hindu scriptures that followed the Vedic scriptures. These scriptures would reveal a vast body of insights into the nature of Brahman as originally revealed in the Vedas.