Acts 7:54 in the World English Bible
Now when they heard these things, they were cut to the heart, and they gnashed at him with their teeth.
Context
53 Who have received the law by the disposition of angels, and have not kept it.
54 When they heard these things, they were cut to the heart, and they gnashed on him with their teeth.
55 But he, being full of the Holy Ghost, looked up stedfastly into heaven, and saw the glory of God, and Jesus standing on the right hand of God,