Hebrews 10:28

Despised. Gr. atheteo, “to refuse to recognize,” “to reject,” “to nullify.” Those who “despised Moses’ law” did so by living in open violation of its precepts. They flouted the authority of the law and challenged its jurisdiction over them.

Moses’ law. Here referring to the entire legal code promulgated by Moses under divine direction, particularly as recorded in the book of Deuteronomy (see Deut. 31:24—26).

Died without mercy. There was no appeal. There was no higher court to extend mercy. There was no escape from the penalty the law prescribed. Avowed apostates must die lest their influence contaminate others.

Under. Literally, “on [the testimony of].”

Two or three witnesses. In case of serious crime, such as murder, Moses stipulated that at least two witnesses must be in agreement on the essential details before a verdict of guilty could be pronounced (Deut. 17:6; cf. on Matt. 26:60; see Vol. V, p. 539). This merciful and wise provision tended to discourage false accusations and to assure justice. The same principle is valid today.