Wisdom of today.

The Absolute Truth is contained in all the great Scriptures of the world; the Bible, Koran, Torah, etc. However, the oldest known Revealed Scriptures in existence are the Vedic literatures, most notably the BHAGAVAD GITA which is the literal record of God's actual Words.

Source : https://vedabase.io/en/library/letters/letter-to-unknown-5/