He builds our character…

God … is very gentle with very young Christians, just as mothers are with very young babies. Often the start of their Christian career is marked by great emotional joy, striking providences, remarkable answers to prayer, and immediate fruitfulness in their first acts of witness; thus God encourages them, and establishes them in ‘the life.’ But as they grow stronger, and are able to bear more, He exercises them in a tougher school. He exposes them to as much testing by the pressure of opposed and discouraging influences as they are able to bear—not more (see the promises of 1 Corinthians 10:13), but equally not less (see the admonition, Acts 14:22). Thus He builds our character, strengthens our faith, and prepares us to help others.

J. I. Packer, quoted in Decision Making and the Will of God by Garry Friesen, p. 286

The Spirit’s inspiring activity…

We are to think of the Spirit’s inspiring activity, and, for that matter, of all His regular operations in and upon human personality, as (to use an old but valuable technical term) concursive; that is, as exercised in, through and by means of the writers’ own activity, in such a way that their thinking and writing was both free and spontaneous on their part and divinely elicited and controlled, and what they wrote was not only their own work but also God’s work.

J. I. Packer, quoted in A General Introduction to the Bible by Norman Geisler, p. 38