Inspiration: The process by which God worked through the human authors of the Bible to communicate His revelation. The term derives from the Greek theopneustos, meaning “God-breathed” (2 Tim. 3:16), and refers to God as the ultimate source of the Scriptures.
"...all of the Scripture has been breathed out by God, he is saying that it’s ultimate origin is in Him. It is His word. It is His speech. He is the One who is the source of these writings. And so when we talk about the doctrine of inspiration, we’re talking about the way in which God superintends the writing of sacred Scripture. That God does not just act, and let people respond with their own insight, and their own imagination to set forth their view of what God has done, but that God is working by the Holy Spirit to superintend that record to make sure that the record that is written is His Word." - R. C. Sproul
"All Scripture is breathed out (θεόπνευστος, ον, theópneustos) by God and profitable for teaching, for reproof, for correction, and for training in righteousness." - 2 Tim 3:16