A difference in vocabulary

The term θέμις [themis] (“custom/law/legislation”), which was important in pagan Greek law and was mythically personified as Themis, daughter of Uranus and Gē/Gaia and mother (with Zeus as the father) of the Hours, of Dike, Eunomia, and Eirene (cf. Hesiod, Theog. 135, 901–2), only appears in the LXX in 2 Macc 6:20 and 12:14 in the expression “it is just/equitable,” while the New Testament authors do not use the term at all.—The Development of God in the Old Testament, pages 49–50 n. 73