Most popular authors are prolific. They write and write. Many had several books on the market before they became well known. God didn't do that. If you go in a Books-A-Million and search a database for "books that God wrote," you'll only find one listing.
Things to Which Salvation Is Ascribed
Christ’s words (John 6:63).
The Holy Spirit (John 16:8; Titus 3:5).
Faith (Romans 10:10).
Repentance (Luke 13:3; 2 Peter 3:9).
Baptism (Mark 16:16; 1 Peter 3:21; Titus 3:5).
The birthright was the natural privilege of the firstborn son. Receiving the birthright, the firstborn would become the head of the family, and would have charge of the family, including the family property.