God personally communicated with Adam, Eve, Abraham, Moses, the prophets, and to us through His Son. With the Scriptures, God teaches His faithful today.
The book of Hebrews systematically proves Christ's superiority to patriarchs, prophets, the Levitical Priesthood, and angels, establishing His credentials.
God has communicated tirelessly with humanity through men and angels. The first chapters of Hebrews displays Christ's superiority over even the angels.
God confused the languages at the tower of Babel, causing confusion similar to the discord in the West. Without communication, productivity grinds to a halt.