'Answer' in the Bible

For he knew not what to answer; for they became sore afraid.

And Jesus said unto them, I will ask of you one question, and answer me, and I will tell you by what authority I do these things.

The baptism of John, was it from heaven, or from men? answer me.

And again he came, and found them sleeping, for their eyes were very heavy; and they knew not what to answer him.