The oldest known collection of writings which were gathered into Old and New Testaments is a work identified as the Ethiopic Bible (second century, AD). The Ethiopian Orthodox Church has 46 books of the Old Testament and 35 books of the New Testament that will bring the total of canonized books of the Bible to 81.
A. The Holy Books of the Old Testament
1. Genesis
2. Exodus
3. Leviticus
4. Numbers
5. Deuteronomy
6. Joshua
7. Judges
8. Ruth
9. I and II Samuel
10. I and II Kings
11. I Chronicles
12. II Chronicles
13. Jubilee
14. Enoch
15. Ezra and Nehemia
16. Ezra (2nd) and Ezra Sutuel
17. Tobit
18. Judith
19. Esther
20. I Maccabees
21. II and III Maccabees
22. Job
23. Psalms
24. Proverbs
25. Tegsats (Reproof)
26. Metsihafe Tibeb (the books of wisdom)
27. Ecclesiastes
28. The Song of Songs
29. Isaiah
30. Jeremiah
31. Ezekiel
32. Daniel
33. Hosea
34. Amos
35. Micah
36. Joel
37. Obadiah
38. Jonah
39. Nahum
40. Habakkuk
41. Zephaniah
42. Haggai
43. Zechariah
44. Malachi
45. Book of Joshua the son of Sirac
46. The Book of Josephas the Son of Bengorion
B. The holy books of the New Testament
1. Matthew
2. Mark
3. Luke
4. John
5. The Acts
6. Romans
7. I Corinthians
8. II Corinthians
9. Galatians
10. Ephesians
11. Philippians
12. Colossians
13. I Thessalonians
14. II Thessalonians
15. I Timothy
16. II Timothy
17. Titus
18. Philemon
19. Hebrews
20. I Peter
21. II Peter
22. I John
23. II John
24. III John
25. James
26. Jude
27. Revelation
28. Sirate Tsion (the book of order)
29. Tizaz (the book of Herald)
30. Gitsew
31. Abtilis
32. The I book of Dominos
33. The II book of Dominos
34. The book of Clement
35. Didascalia
The Ethiopic version of the Old and New Testament was derived from the Septuagint. It also includes the book of Enoch, Baruch, and the third and fourth Esdras. It is the church of Ethiopia that undertook to preserve these sacred documents. Among those preserved books is the book of Enoch and the book of Jubilees (Kufale, i.e. Division) otherwise known as the Little Genesis, which has also been preserved in its entirety only in the Ethiopic version. The preservation of yet one more book in its entirety, namely, the Ascension of Isaiah, is to be remembered to the credit of the Ethiopic Church.
For further reading...
What is Canonization?
Canonicity: The Septuagint – Part 1
Canonicity: The Synod of Jamnia – Part 3
Canonicity: The Council of Nicea – Part 4
Canonicity: The Council of Laodicea – Part 5
Qs and As on the Cepher Chanoch (Book of Enoch)
The Cepher of Chanoch (Book of Enoch) - its structure
The Cepher of Chanoch (Book of Enoch) - its credibility
Cepher Chanoch: On the veracity of the Book of Enoch
Cepher Chanoch: Understanding the Book of Enoch