Since Jesus is God, why did He have to learn anything?

Initially, we don’t readily understand how Jesus, as God incarnate, with all the attributes of deity, could possibly increase in wisdom or gain favor with God. But this is a statement about Jesus’ humanity. As God, Jesus is of course perfect in every way and therefore eternally unchanging (Hebrews 13:8). Divine omniscience, by definition, does not allow for any increase in wisdom. But in the conscious awareness of His human mind, Jesus did not always avail Himself of the infinite knowledge He possessed as God. He did not lose His omniscience or cease being God, but He voluntarily suspended the use of that quality—so that as a boy, He learned things the same way every human child learns.

Furthermore, in His growth from boyhood to manhood, Jesus gained the admiration of others and the approval of God for the way He lived as a human subject to God’s law (Galatians 4:4). Luke 2:52 is therefore not a denial of Jesus’ deity; it is an affirmation of His true humanity. The stress is on the normalcy of His development. In His progress from childhood to manhood, Jesus endured everything any other child would experience—except for the guilt of sin.