Commentaries:
Jesus kept the Passover as a man because God had commanded it as a festival. In this, He set us a perfect example, showing us that we should observe this festival too.
Earl L. Henn
Holy Days: Passover
Even Jesus, though He was God—Deity—had to increase the same way that we do. He had to study God's Word, to question, to grow.
John W. Ritenbaugh
The Covenants, Grace, and Law (Part Nineteen)
Other Forerunner Commentary entries containing Luke 2:40:
Psalm 22:9-10