are we sure. we know. Greek. oida. App-132. Same word as "tell "(John 16:18) and "knowest "in next clause.
by. in. Greek. en. App-104.
Related Commentaries of John 16:30
John 16:30
30 Now are we sure that thou knowest all things, and needest not that any man should ask thee: by this we believe that thou camest forth from God.