Verbal means that every word of Scripture is breathed out by God. In other words, God communicated not by thought or ideas, but accurately and precisely through words.
- which things we also speak, not in words taught by human wisdom, but in those taught by the Spirit, combining spiritual thoughts with spiritual words. - 1 Corinthians 2:13
Verbal inspiration applies not only to the words themselves but to the letters and the parts of the letters.
- For truly I say to you, until heaven and earth pass away, not the smallest letter or stroke shall pass from the Law until all is accomplished. - Matthew 5:18
Plenary means that all Scripture, in all its parts, is equally from God. There is no part of Scripture that is more inspired than another part. The Law is just as inspired as the Gospels, and the Psalms are just as inspired as the Epistles. By teaching about Himself from the three parts of the Old Testament (i.e., the Law, the Prophets, and the Psalms), Jesus affirmed that they were equally inspired.
- Now He said to them, These are My words which I spoke to you while I was still with you, that all things which are written about Me in the Law of Moses and the Prophets and the Psalms must be fulfilled. Then He opened their minds to understand the Scriptures, - Luke 24:44-45
If only certain parts of Scripture are inspired, which parts are? If some portions of Scripture are more inspired than others, are the more inspired, more trustworthy?