As I understand it, the Christology of St. Thomas Aquinas (
via Fr. Brian Mullady, OP) asserts that Christ’s human knowledge comes from His human soul, which is the most perfectly created thing. Therefore He must possess the kinds of knowledge that all human creatures can perfectly possess:
(1)
Infused (2)
Acquired (which is limited) (3)
Beatific.
There is a tendency to either deny (1) and (3) at the expense of preserving (2), or to deny (2) at the expense of preserving (1) and/or (3). The former tendency seems to be common today, while the latter tendency, according to Fr. Mullady, was more common during Middle Ages. St. Thomas was able to integrate all three together, which is quite a feat.
My theology professor once said that most “little old ladies” in the U.S. today have a Apollinarian streak (I guess by denying Christ’s limited and acquired human knowledge). On the other hand, contemporary theology in certain quarters seems somewhat Adoptionistic (by denying Christ’s infused knowledge and Beatific Vision).
St. Thomas’s perspective is paradoxical, yet offers a richness that is lacking in either of the two tendencies: that Christ knew all that Divine Revelation reveals to Man and “whatever pertains to human sciences,” yet discovering the the way of speaking Aramaic from Joseph and Mary, all the while possessing the Beatific Vision from the moment of His conception.
The
Catechism of the Catholic Church reflects this Thomistic richness in 472 (limited and acquired human knowledge) 473-474 (Infused and Beatific, although the
Catechism isn’t precise in distinguishing the two).
And to get back to the subject, St. Thomas would argue that while Christ’s human intellect cannot comprehend (i.e. intellectually exhaust) everything in the Divine essence, Christ’s human intellect can still know the infinite. I’m not very clear on St. Thomas’s reasons, but he seems to argue that just as the Saints in Heaven can’t comprehend the infinite God, yet can still know the infinite God, so can Christ in an even greater degree. Now, since Christ’s human intellect possessed the Beatific Vision from the moment of his conception (*via * the Hypostatic Union), then He knew, but did not comprehend, the infinite, which includes His divine identity. This corresponds to the
Catechism’s statement, quoting from St. Maximus the Confessor, that “[t]he human nature of God’s Son,
not by itself but by its union with the Word, knew and showed forth in itself everything that pertains to God.”
My impression is that St. Thomas wouldn’t think that the Resurrection modified Christ’s human intellect in regards to the knowledge of his divinity. I’ll have to look this up further, but from my preliminary reading of St. Thomas, while Christ assumed certain defects of body (death, hunger, and thirst), He didn’t assume the defect of intellectual ignorance. Therefore, the Resurrection doesn’t change anything intellectually in Christ as it changed his body.