Augustine of Hippo
Catena Aurea · Matthäusevangelium 14
At that time Herod the tetrarch heard of the fame of Jesus. And said unto his servants, This is John the Baptist; he is risen from the dead; and therefore mighty works do shew forth themselves in him. For Herod had laid hold on John, and bound him, and put him in prison for Herodias’ sake, his brother Philip’s wife. For John said unto him, It is not lawful for thee to have her. And when he would have put him to death, he feared the multitude, because they counted him as a prophet.
(De Cons. Ev. ii. 43.) Matthew says, At that time, not, On that day, or, In that same hour; for Mark relates the same circumstances, but not in the same order. He places this after the mission of the disciples to preach, though not implying that it necessarily follows there; any more than Luke, who follows the same order as Mark.