John 1:50
"Jesus answered and said unto him, Because I said unto thee, I saw thee under the fig tree, believest thou? thou shalt see greater things than these."
Cross References (ranked by relevance)
John 20:29
Jesus saith unto him, Thomas, because thou hast seen me, thou hast believed: blessed are they that have not seen, and yet have believed.
John 11:40
Jesus saith unto her, Said I not unto thee, that, if thou wouldest believe, thou shouldest see the glory of God?
Luke 1:45
And blessed is she that believed: for there shall be a performance of those things which were told her from the Lord.
Matthew 25:29
For unto every one that hath shall be given, and he shall have abundance: but from him that hath not shall be taken away even that which he hath.