Mark 14:19

And they were sorry, and said to him, one by one, Is it I? And another, Is it I?

And being grieved exceedingly, they each one began to say to him, Lord, is it I?

But behold, the hand of the traitor is with me on the table;

The disciples looked one on another, doubting of whom he spoke.

Treasury of Scripture Knowledge

And they began to be sorrowful, and to say unto him one by one, Is it I? and another said, Is it I?

And being grieved exceedingly, they each one began to say to him, Lord, is it I?

But behold, the hand of the traitor is with me on the table;

The disciples looked one on another, doubting of whom he spoke.

And being grieved exceedingly, they each one began to say to him, Lord, is it I?

And they inquired among themselves which of them it was who was about to do this.