When studying the Holy Scriptures, it is necessary to keep in mind that the Holy Scriptures have two sides – the Divine and the human. The divine side consists in the fact that the Holy Scriptures contain the God-revealed Truth. The human side is that this eternal, unchanging Truth is expressed in the language of people of a certain epoch, who belonged to a certain culture, therefore the biblical books reflect the cosmological, natural-scientific, historical ideas of people of the epoch of their creation. Saying that the Holy Scriptures contain the unchangeable God-revealed Truth, it is necessary to clearly understand that this statement refers only to religious and moral truths, but does not at all mean the infallibility of the Bible from the point of view of the natural and historical sciences.

2.3. The Canon of the Books of the Holy Scriptures

The word "canon (κάνονος)" in Greek literally means "reed". In ancient times, measuring sticks were made from reeds, which were used in land surveying. Over time, this word began to denote a norm, measure, standard. In the Church, canons are the rules that regulate the life of a church organization [46]. As applied to the Holy Scriptures, the canon is a list of books officially accepted by the Church that the Church recognizes as divinely inspired. These books are called canonical.

«… The Church, guided by the Holy Spirit, has singled out these books in a completely separate collection, which she has approved and offered to the faithful as books that contain a model of true faith and piety, suitable for all times. New books cannot be added to the canon of Holy Scripture, nor can anything be subtracted from it..." [47].

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.