Perhaps some one may ask how it can be here said, “At that time Herod heard,” seeing that we have long before read that Herod was dead, and that on that the Lord returned out of Egypt. This question is answered, if we remember that there were two Herods. On the death of the first Herod, his son Archelaus succeeded him, and after ten years was sent into exile to Vienne in Gaul. Then Caesar Augustus gave command that the kingdom should be divided into tetrarchies, and gave three parts to the sons of Herod. This Herod then who beheaded John is the son of that greater Herod under whom the Lord was born; and this is confirmed by the Evangelist adding “the tetrarch.”
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).