And when He was twelve years old, they went up to Jerusalem according to the custom of the feast.

After the Evangelist had said, that Jesus advanced in wisdom and grace with God and men, he next shews that what he says is true: for he carries Him to Jerusalem in company with the holy Virgin, upon the summons of the feast: and then he says that He remained behind, and was afterwards found in the temple sitting in the midst of the doctors both asking and answering questions regarding those things, as we may feel sure, which were spoken of old by the law: and that He was wondered at by all for His questions and answers. Thou seest Him advancing in wisdom and grace, by reason of His becoming known unto many as being what He was.

Thy father and I have sought Thee sorrowing.

His mother certainly knew that He was not the child of Joseph, but she so speaks to avoid the suspicions of the Jews. And upon her saying, that “Thy father and I have sought Thee sorrowing,” the Savior answers;

Did ye not know that I must be at My Father’s?

Here then first He makes more open mention of Him Who is truly His Father, and lays bare His own divinity: for when the holy Virgin said, Child, why hast Thou so done unto us? then at once shewing Himself to transcend the measure of human things, and teaching her that she had been made the handmaid of the dispensation in giving birth to the flesh, but that He by nature and in truth was God, and the Son of the Father That is in heaven, He says, Did ye not know that I must be at My Father’s? Here let the Valentinians, when they hear that the temple was God’s, and that Christ was now at His own, Who long before also was so described in the law, and represented as in shadows and types, feel shame in affirming, that neither the Maker of the world, nor the God of the law, nor the God of the temple, was the Father of Christ. — Sermon 5.