Hebrews 10:28

ἀθετήσας τις νόμον.… “Any one who has set aside Moses' law dies without mercy on the evidence of two or three witnesses,” in accordance with the law laid down in Deuteronomy 17:6 regarding apostasy; although capital punishment was not restricted to this sin. For ἀθετεῖν cf. 1 Thessalonians 4:8; and Isaiah 24:16, οὐαὶ τοῖς ἀθετοῦσιν, οἱ ἀθετοῦντες τὸν νόμον, also Ezekiel 22:26. ἀθέτησις is used absolutely in 1 Samuel 24:12. ἐπὶ … μάρτυσιν, cf. Hebrews 9:17; ἀποθνήσκαι, perhaps the tense does not carry with it the inference that the law was still being enforced. It may only mean “he dies” according to the law as it stands. χωρὶς οἰκτιρμῶν, to emphasise the inexorablenesa of the law and the inevitable character of the doom. Cf. Josephus, c. Apion, ii. 30, ὁ νόμος ἀπαραίτητος and Ignatius, ad Eph. c. 16.