'Silent' in the Bible

And he saith to them, 'Is it lawful on the sabbaths to do good, or to do evil? life to save, or to kill?' but they were silent.

and they were silent, for with one another they did reason in the way who is greater;

and many were rebuking him, that he might keep silent, but the more abundantly he cried out, 'Son of David, deal kindly with me.'

and he was keeping silent, and did not answer anything. Again the chief priest was questioning him, and saith to him, 'Art thou the Christ -- the Son of the Blessed?'