And many other things preached he unto the people In this manner did John inculcate the doctrine of repentance, and declare his Master's greatness. But his sermons were not confined to these matters. He discoursed also on many other important subjects, according as he knew they would be profitable to his hearers. But Herod the tetrarch, being reproved by him, &c. In the whole course of John's ministry he showed great integrity and courage, but especially in his intercourse with Herod the tetrarch, who, it seems, had heard him, and admitted him into conversation; for he was so bold as to address the tetrarch on the subject of his favourite sins, particularly his adultery with Herodias. This he represented to him in its true colours, and reproved him for it. But the effect of his exhortation was not what it ought to have been. It did not bring Herod to repentance. On the contrary, it so provoked him, that he cast the Baptist into prison, and thereby put an end to his ministry, after it had lasted a considerable time. This circumstance, though it happened after, is here mentioned before our Lord's baptism, that his history (that of John being concluded) might then follow without any interruption.
Related Commentaries of Luke 3:18
Luke 3:18-20
18 And many other things in his exhortation preached he unto the people.
19 But Herod the tetrarch, being reproved by him for Herodias his brother Philip's wife, and for all the evils which Herod had done,
20 Added yet this above all, that he shut up John in prison.