John 3:11 in the World English Bible
Most certainly I tell you, we speak that which we know and testify of that which we have seen, and you don’t receive our witness.
Context
10 Jesus answered and said unto him, Art thou a master of Israel, and knowest not these things?
11 Verily, verily, I say unto thee, We speak that we do know, and testify that we have seen; and ye receive not our witness.
12 If I have told you earthly things, and ye believe not, how shall ye believe, if I tell you of heavenly things?