John 4:39
And many of the Samaritans of that city believed on him for the saying of the woman, which testified, He told me all that ever I did.
Cross-reference
John 4:29 records the woman's exact testimony — 'He told me everything I ever did' — which is the cause of the belief mentioned in verse 39.
John 4:42 shows the Samaritans progressing from belief based on her testimony to personal faith — a continuation of the narrative from verse 39.
In John 4:25, the woman expects the Messiah to tell all things — her testimony in v.39 directly fulfills that expectation.
In John 10:41, many believed because of John's testimony about Jesus, paralleling the Samaritans believing because of the woman's testimony here.
In John 1:37, disciples follow Jesus after John the Baptist's testimony — a parallel to Samaritans believing because of the woman's testimony.
In John 7:31, people believe in Jesus based on signs — a parallel to belief based on his divine knowledge in John 4:39.
In John 11:45, many Jews believed after seeing Jesus raise Lazarus — another instance of belief resulting from a witness, similar to the woman's testimony.