As children grow and develop, we understand that there is a process. Bottle feeding becomes spoon-feeding, which then leads to eating solid foods. However, if a person goes decades without moving past the spoon-feeding stage, we recognize something is abnormal.
Why don't we do the same when we measure spiritual maturity? When we see a follower of Jesus go years or decades without growth and continue to need to be spoon-fed God's Word and taught Kingdom principles, why do we not recognize that as abnormal?