This verse confirms the meaning given to the preceding words. They understand them in that sense. There are works for them to do which are appointed of God. What shall they do that they may work these works? They had seen Him doing mighty works, which clearly showed the power of God. Are there for them works of a like kind? What steps must they take that they too may work them?
Related Commentaries of John 6:28
John 6:28
28 Then said they unto him, What shall we do, that we might work the works of God?