Waxed strong in spirit. — The better MSS. omit the last two words.
Filled with wisdom. — The Greek participle implies the continuous process of “being filled,” and so conveys the thought expressed in Luke 2:52, of an increase of wisdom. The soul of Jesus was human, i.e., subject to the conditions and limitations of human knowledge, and learnt as others learn. The heresy of Apollinarius, who constructed a theory of the Incarnation on the assumption that the Divine Word (the Logos of St. John’s Gospel) took, in our Lord’s humanity, the place of the human mind or intellect, is thus, as it were, anticipated and condemned.
The grace of God was upon him. — The words seem chosen to express a different thought from that used to describe the growth of the Baptist. Here there was more than guidance, more than strength, a manifest outflowing of the divine favour in the moral beauty of a perfectly holy childhood.
On the history of the period between this and the next verses, see Excursus in the Notes on Matthew 2.