Barnabas 1:5
if it shall be my care to communicate to you some portion of that
which I received, it shall turn to my reward for having ministered to
such spirits, I was eager to send you a trifle, that along with your
faith ye might have your knowledge also perfect.
http://www.earlychristianwritings.com/text/barnabas-lightfoot.html
I reminds me of 1 Corinthians 13:12 “For now we see through a glass, darkly; but then face to face: now I know in part; but then shall I know even as also I am known.”