'Unable' in the Bible

And now, because you did not believe my words, which will be fulfilled in their time, you will be silent, unable to speak, until the day these things take place."

When he came out, he was not able to speak to them. They realized that he had seen a vision in the holy place, because he was making signs to them and remained unable to speak.

Thus they were unable in the presence of the people to trap him with his own words. And stunned by his answer, they fell silent.