INSPIRATION AND PRESERVATION

Inspiration is (we might use the example) when God takes a blank piece of paper and uses men to write his words.
Preservation is when God takes those words already written and uses men to preserve them throughout the ages.

Psalm 12:6,7: "The words of the LORD are pure words: as silver tried in a furnace of earth, purified seven times. Thou shalt keep them, O LORD, thou shalt preserve them from this generation for ever.
So by Verse 6 we know that the originals were perfect. They were inspired, they were pure words. But in Verse 7 it says "Thou shalt keep them, O LORD, thou shalt preserve them f rom this generation for ever.