Kehilah In Thessalonika 1 4:6 Orthodox Jewish Bible (OJB)

That no man commit peysha and take advantage of one of his Achim b'Moshiach in this [sexual] matter, because Hashem is the Nokem (Avenger) concerning all these things, just as also we told you before and warned you.

Kehilah In Thessalonika 1 4

Kehilah In Thessalonika 1 4:2-8