Cross reference
Acts 24:13
13 Neither can they prove to thee the things whereof they now accuse me.
Acts 25:7
7 And when he was come, the Jews that had come down from Jerusalem stood round about him, bringing against him many and grievous charges which they could not prove;
1 Peter 3:16
16 having a good conscience; that, wherein ye are spoken against, they may be put to shame who revile your good manner of life in Christ.