John Chrysostom — as excerpted in the Catena Aurea on Matthew 10:26-28

“As He said, He that believeth on me, the works that I do he shall do also, and greater things than these shall he do; (John 14:12.) so here He shews that He works all things through them more than through Himself; as though He had said, I have made a beginning, but what is beyond, that I will to complete through your means. So that this is not a command but a prediction, shewing them that they shall overcome all things.”