A study of the life of Christ reveals a stark fact. Although there is abundant information about His birth and the events associated with His earliest childhood, we know nothing about His life between those days and the beginning of His public ministry at age thirty, with the exception of the incident in the temple when He was twelve years old. What was he doing in the intervening years?
In Jesus: A Biography from a Believer, Paul Johnson suggests that Jesus probably worked at a number of different professions, including that of a shepherd and that of a farmer, since He used so many illustrations from the world of the shepherd and the farmer. Surely Joseph taught Jesus the trade of carpentry. Teaching in the synagogue, He astonished the people , who said, “Is not this the carpenter, the son of Mary, the brother of James, and Joses, and of Juda, and Simon? and are not his sisters here with us? And they were offended at him” (Mark 6:3). From this statement, we surmise that Joseph was no longer living, so Jesus likely waited to begin His public ministry until he had fulfilled his responsibility as the oldest son to care for His mother and younger brothers and sisters, not yet adults.
Although we have no inspired description of those “lost years,” we can see that they were not lost years but years of preparation. The incident in the temple demonstrates that from His youth Jesus was preparing for His life’s work. Mary said, “Son, why hast thou thus dealt with us? behold, thy father and I have sought thee sorrowing. And he said unto them, How is it that ye sought me? wist ye not that I must be about my Father’s business?” (Luke 2:48–49). He knew what was needed was to serve His heavenly Father. He knew He was pursuing knowledge, preparing for His public ministry. When fulness of the time came (Galatians 4:4), He was totally prepared for His ministry. He gave us an example to follow in His suffering (1 Peter 2:21), but also in preparation for service. Are you in a period of “lost years”? Make it a time of preparation for service.