not merely human

Above all, you must understand that no prophecy of Scripture came about by the prophet’s own interpretation of things. For prophecy never had its origin in the human will, but prophets, though human, spoke from God as they were carried along by the Holy Spirit.
2 Peter 1:20‭-‬21 NIV

This passage teaches that when you read Scripture, what you are reading does not merely come from a man but also from God. The Bible is the writing of many different men. But it is also far more than that. Yes, men spoke. They spoke with their own language and style. But Peter mentions two other dimensions of their speaking.

First, they spoke from God. What they have to say is not merely from their own limited perspective. They are not the origin of the truth they speak; they are the channel. The truth is God's truth. Their meaning is God's meaning.

Second, not only is what they spoke from God, but how they spoke it is controlled by the Holy Spirit. Men, moved by the Holy Spirit, spoke from God. God did not simply reveal truth to the writers of Scripture and then depart in hopes that they might communicate it accurately. Peter says that in the very communicating of it they were carried by the Holy Spirit. The making of the Bible was not left to merely human skills of communication; the Holy Spirit himself carried the process to completion.

©2014 Desiring God Foundation. Find many other free resources by John Piper at desiringGod.org

The Holy Spirit is the divine author of all Scripture. If this doctrine is true — and it is — then the implications are so profound and far-reaching that every part of our lives should be affected.

Because Holy Spirit is the author of Scripture, it is true (Psalm 119:142) and altogether reliable (Hebrews 6:18).

It is powerful, working its purpose in our hearts (1 Thessalonians 2:13) and not returning empty to the One who sent it (Isaiah 55:10–11).

It is pure, like silver refined in a furnace seven times (Psalm 12:6).

It is sanctifying (John 17:17).

It gives life (Psalm 119:37, 50, 93, 107; John 6:63; Matthew 4:4).

It makes wise (Psalm 19:7; 119:99–100).

It gives joy (Psalm 19:8; 119:16, 92, 111, 143, 174) and promises great reward (Psalm 19:11).

It gives strength to the weak (Psalm 119:28) and comfort to the distraught (Psalm 119:76) and guidance to the perplexed (Psalm 119:105) and salvation to the lost (Psalm 119:155; 2 Timothy 3:15).

The wisdom of God in Scripture is inexhaustible.

How precious to me are your thoughts, O God! How vast is the sum of them! 
If I would count them, they are more than the sand.