The words I know that you always listen to me support the interpretation given to verse 41.

The purpose of Jesus’ prayer, as his own words indicate, is that the people will believe that the Father sent him. Jesus is not concerned to show the people that he is a miracle worker, but rather to reveal through his miracles the power of God active in him. This meaning is indicated by the fact that in Greek you (in the clause you sent me) is emphatic.

Quoted with permission from Newman, Barclay M. and Nida, Eugene A. A Handbook on the Gospel of John. (UBS Handbook Series). New York: UBS, 1980. For this and other handbooks for translators see here .