They set them (εστησαν). First aorist active indicative (transitive) of ιστημ.

No notes from Barnes on this verse.

(19–21a) This is one of three “opening of the prison doors” stories in the book of Acts (cf. 12:6–11; 16:26–29). The “angel of the Lord” is the NT …

And when they had brought them
From the temple, to the place where the sanhedrim sat, which, by this, seems to have …

Many will do an evil thing with daring, yet cannot bear to hear of it afterward or to be accused of it. We cannot expect to be redeemed and healed …