Truly man is fearfully and wonderfully made.
Is it not reasonable for him to expect that the Almighty God would reveal to man something of the divine greatness and plans and purposes?
Yes, and such revelation is found in that wonderful book, the holy Bible.
[13]Who wrote the Bible?
What is known as the Old Testament was written by holy men of old who were moved upon by the invisible power of Jehovah to write it.

(2 Peter 1:21; 2 Samuel 23:2; Luke 1:70) The New Testament consists of the spoken words of Jesus, the Son of God, who spake as never man spake, and whose words were recorded by those who heard him and witnessed his acts; and in addition thereto, the written testimony of his disciples, who wrote under inspiration from God.
[14]The holy spirit means the invisible power or influence of Jehovah-- holy because he is holy.

This power of Jehovah operated upon the minds of honest men who loved and who were devoted to righteousness, directing them in the writing of the Bible.

The spirit of God, i.e., his invisible power and influence, moved upon the waters and thereby he created.
(Genesis 1:2) In like manner his invisible power and influence operated upon the minds of men and directed them what to write.

Thus did Moses write the first five books of the Bible.