Christ indeed had already manifested Himself at His birth by many oracles, but because men would not consult them, He who had in the mean time remained secret, again more clearly revealed Himself in a second birth. For formerly a star in the heavens, now the Father at the waves of Jordan declared Him, and as the Spirit descended upon Him, pouring forth that voice over the head of Him who was baptized, as it follows, And a voice came from heaven, Thou art my beloved Son.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).