Matthew Poole and continuators on Acts 16:17

17 The same followed Paul, and us, and cried, saying, These men are the servants of the most high God, which shew unto us the way of salvation,

The Devil might be forced by God to confess this; or, he might do it voluntarily by Gods permission: First, To draw men on to believe him in other things, being he commended the Servants of God, and spake the truth in this. Secondly, That by flattering of St. Paul, he might puff him up, and occasion him to sin. But an Evil spirit (or an Evil man) when he dissembles as if he were good, is then worst of all.