God used human writers — their personalities, vocabulary, and historical context — yet ensured that what they wrote was exactly what He intended.

Characteristics of Biblical Inspiration
Human Writers, Divine Message. The writers were not passive or unconscious. They wrote with full awareness, but under the Spirit’s direction.
This is why Scripture can be both:
Just as Jesus Christ is fully God and fully man, the Scriptures are a divine‑human product without flaw.