John Chrysostom

They say not, "he speaketh," but, "he ceaseth not to speak. And they stirred up the people, and the elders, and the scribes, and came upon him, and caught him, and brought him to the council, and set up false witnesses, which said, This man ceaseth not to speak blasphemous words against this holy place, and the law." "Ceaseth not," say they, as if he made this his business. …

Homily on Acts 15 ↗

Theophylact of Ohrid

"And they set up false witnesses, who said." Everywhere false testimony. They did not wish to kill simply, but by verdict, calculating that by this they would undermine the good reputation of those whom they were killing. They did not say of Stephen: "he speaks," but — "he does not cease. For we have heard him say that Jesus the Nazarene" ("Nazarene" is said as a reproach) "will destroy this place." This was also said about Christ: "He who destroys the temple" (Matt. 27:40). …

Commentary on Acts ↗

Oecumenius

They brought men who said that "we have heard him uttering blasphemous words against Moses and God." What were the words? "That this Jesus of Nazareth will destroy this place." And indeed Stephen said this, though not perhaps in so bare a form. How then are these men persuaded and false witnesses? Because they did not hear it as they now reported, but lied. For since they had heard otherwise and now advanced a different account, it is reasonable that they be recorded as false witnesses. …

Commentary on Acts ↗