2 Thessalonians 3:10

Precept as well as example (DC [36], ii. 2). As is perhaps implied in ὅτι, εἰ … ἐσθιέτω is a maxim quoted by the apostle, not from some unwritten saying of Jesus (Resch) but from the Jewish counterparts, based on Genesis 3:19, which are cited by Wetstein, especially Beresch. rabba, xiv. 12: “ut, si non laborat, non manducet”. Cf. Carlyle's Chartism, chap. iii (“In all ways it needs, especially in these times, to be proclaimed aloud that for the idle man there is no place in this England … he that will not work according to his faculty, let him perish according to his necessity”). The use of ἐν Κυρίῳ here and in 1 Corinthians 11:11 (cf. Matthew 19:4 f.) proves, as Titius argues (der Paulinismus unter dem Gesichtspunkt der Seligkeit, 1900, p. 105), that the original divine ideas of the Creation are fulfilled and realised in the light of Christ's gospel; the entire process of human life culminates in the faith of Christ, and therefore no unqualified antithesis can be drawn between ordinary life and Christian conduct.

[36] CG Hastings' Dictionary of Christ and the Gospels (1907 1908)