16:16-24 Satan, though the father of lies, will declare the most important truths, when he can thereby serve his purposes. But much mischief is done to the real servants of Christ, by unholy and false preachers of the gospel, who are confounded with them by careless observers. Those who do good by drawing men from sin, may expect to be reviled as troublers of the city. While they teach men to fear God, to believe in Christ, to forsake sin, and to live godly lives, they will be accused of teaching bad customs.
21. And teach customs, which are not lawful for us to receive, neither to observe, being Romans—Here also there was a measure of truth; as the introduction of new gods was forbidden by the laws, and this might be thought to apply to any change of religion. But the whole charge was pure hypocrisy; for as these men would have let the missionaries preach what religion they pleased if they had not dried up the source of their gains, so they conceal the real cause of their rage under color of a zeal for religion, and law, and good order: so Ac 17:6, 7; 19:25, 27.