Our High Priest, Jesus Christ, was trained—perfected, as it were—for the position He now holds. The Bible says that we will be priests and kings under Him (Revelation 5:10). God had never experienced life as a human being until He became flesh, when He was encompassed with the same kind of frame we are. He then also had a mind that was subject to Satan the Devil, if He would allow it.
He suffered many things: He went through difficulties and angers. He felt and endured pain as we do. He took care of a mother. He worked with a father. He had younger brothers and sisters. When his father died, it appears that He became responsible for the family and running the family business. He ran a business as a stone maker, a construction worker, and He did it, undoubtedly, very well.
He learned to work with His hands. He became hungry. He fasted and prayed. He experienced hatred. He learned to trust God and walked with Him, hand in hand, through His own periods in the valley of the shadow of deep gloom. He experienced, in principle, everything in life.
We have to remember that we are being trained to work under Him. Some of the fruit that is produced as a result of our going through these valleys will be helpful to others, even here and now. However, it will be extremely helpful when we are in the Kingdom of God. We need to understand, however, that always, no matter how dark, shadowy, or painful our experiences, we have the very best management that any spiritual sheep could ever possibly have.