Acts 7: 54
When they heard this, they were furious and gnashed their teeth at him.
They were not offended by what Stephen had said. That’s not what brought on their fury. It was the fact they knew he was right. They were cornered, trapped like a wild dog perhaps dangerously afraid but willing right now to bring an uncontrollable defence. Wiling to even eat him alive. They want rid of him. They are either harmed further by the truth or they harm.
Being a truth-sayer is dangerous. You can get yourself into hot water. Choosing not to be silent can cause very loud voices to come towards you. The truth will cost you.