John Chrysostom

He suffers them not however, on the other hand, to wait until the sorrows, but what saith He? "But after I am risen again, I will go before you into Galilee." For not from Heaven doth He appear at once, neither will He depart into any distant country, but in the same nation, in which He had also been crucified, nearly in the same place, so as hereby again to assure them that He that was crucified was the very same that rose again, and in this way to comfort them more abundantly when in sorrow. …

Homily on the Gospel of Matthew 82 ↗

Jerome

For it is written: I will strike the shepherd, and the sheep of the flock will be scattered. But after I have been raised, I will go ahead of you into Galilee. This is also written in different words by the prophet Zachariah; and (if I am not mistaken) it is said by the voice of the prophet to God: Strike the shepherd, and the sheep of the flock will be scattered (Zech. 13:7). …

Commentary on Matthew ↗

Thomas Aquinas

Then he foretells the joys of the resurrection: but after I shall be risen again, I will go before you into Galilee; because although the Father raised him, as is said elsewhere, Acts 2:24: whom God hath raised up, having loosed the sorrows of hell, nevertheless he rose by his own power, because the power of the Father is the power of the Son; 2 Cor. 13:4: for although he was crucified through our weakness, yet he liveth by the power of God. …

Commentary on Matthew ↗