That includes the Book of Jonah and also the Book of Genesis. That includes the parts you can't understand as well as the parts you can understand. All Scripture is inspired of God. The whole Bible originated with God. The original documents of the Bible were God-breathed.
Inspiration is final.
God's written word comes to a close with the Book of Revelation. His complete will for man is given in the Scriptures. All that the guilty sinner ever needs to know and all that the obedient saint can ever anticipate, is stored away in this Divine Library. The Holy Spirit will illuminate and give a fuller apprehension of the truth, but God's truth itself is complete and final. The Bible has been the most persecuted book in all history.