John 4:39-42

Verse 39

Many of the Samaritans - believed on him for the saying of the woman - This woman was the first apostle of Christ in Samaria! She went and told her fellow citizens that the Messiah was come; and gave for proof, that he had told her the most secret things she had ever done: see on Joh 4:29 (note). This word, which is twice repeated, in Joh 4:29 and here, strongly intimates that a more particular conversation had taken place, between our Lord and the Samaritan woman, than what is here related.
Verse 40

He abode there two days - We are not told that he wrought any miracles among them; this does not appear to have been necessary: they were a simple-hearted, teachable people, and they credited him on the evidence of his own eternal truth. Why are not miracles wrought now? Miracles were only for the establishment of the doctrines of Christianity, where they were first preached; we profess to believe these doctrines; therefore, to us, miracles would be useless. Where the doctrine is credited, no miracle is necessary: the Samaritans believed, and no miracle was wrought among them; for the simple reason, it was not necessary.
Verse 42

We have heard him ourselves - On seeing and hearing our Lord, the faith of those who had already believed on the woman's testimony was abundantly confirmed; and, besides those, may others believed who had not heard the woman speak.

This is indeed the Christ - The promised Messiah.

The Savior of the world - Not of the Jews only, but of the Samaritans, and of the whole Gentile world.
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