We it is who in Him are baptized

If then for our sake He sanctifies Himself, and does this when He has become man, it is very plain that the Spirit's descent on Him in Jordan was a descent upon us, because of His bearing our body. And it did not take place for promotion to the Word, but again for our sanctification, that we might share His anointing, …

For when the Lord, as man, was washed in Jordan, it was we who were washed in Him and by Him. And when He received the Spirit, we it was who by Him were made recipients of It. …

And notwithstanding, He who, as the Word and Radiance of the Father, gives to others, now is said to be sanctified, because now He has become man, and the Body that is sanctified is His. From Him then we have begun to receive the unction and the seal, John saying, 'And you have an unction from the Holy One;' and the Apostle, 'And you were sealed with the Holy Spirit of promise. ' Therefore because of us and for us are these words. …

And if, as the Lord Himself has said, the Spirit is His, and takes of His, and He sends It, it is not the Word, considered as the Word and Wisdom, who is anointed with the Spirit which He Himself gives, but the flesh assumed by Him which is anointed in Him and by Him ; that the sanctification coming to the Lord as man, may come to all men from Him ...

It is not the Word then, viewed as the Word, that is promoted; for He had all things and has them always; but men, who have in Him and through Him their origin of receiving them. For, when He is now said to be anointed in a human respect, we it is who in Him are anointed; since also when He is baptized, we it is who in Him are baptized.

Athanasius, Against the Arians, Book 1, 47-48.