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