Kehillah in Thessalonika I 4:6-8

Orthodox Jewish Bible

⁶ 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.

⁷ For [as far as our bechirah (election) is concerned], Hashem did not summon us for tu’ma (uncleanness) but in kedushah (holiness).

⁸ Therefore, the one rejecting this mitzvah (commandment) does not reject Bnei Adam but Hashem who gives to you His Ruach Hakodesh.