Depending on the time of writing, the books of the Holy Scriptures are divided into "two sections".

"Those Holy Books that were written before the Nativity of Christ are called the Books of the Old Testament, and those that were written after the Nativity of Christ are called the books of the New Testament" [48].

The word "covenant" (Heb. berit)" means primarily "contract, agreement, alliance". But since God's promises were directed to the future, and Israel was to inherit the blessings associated with them, the word was translated into Greek as διαθηκής, that is, "covenant or testament."

The principle that unites both Testaments into a single and inseparable whole is the person of the Lord Jesus Christ.

"Both the Old and the New Testaments are received by the Church through Jesus Christ, because they lead to Him, speak of Him, and find their fulfillment in Him" [50].

2.3.1. The Holy Books of the Old Testament

The Old Testament is "the ancient union of God with man," the essence of which consists of

"in the fact that God promised men a Divine Saviour and prepared them to receive Him through gradual revelations, through prophecies and transformations" [51].

Up. Paul testifies to the inspired dignity of the Old Testament books:

"All Scripture is given by inspiration of God, profitable for teaching, reproof, correction, instruction in righteousness"

(2 Tim. 3:16).