Pride was not the only reason God would humble Edom. The Edomites had also cursed the people whom God had purposed to bless, the Israelites (cf. Gen. 27:40-41; Exod. 15:15; Num. 20:14-21; Deut. 2:4; Judg. 11:17-18; 1 Sam. 14:47-48; 2 Sam. 8:13-14; 1 Kings 11:15-16; 1 Chron. 18:11-13; Ps. 60; et al.). In doing this they had incurred God's wrath (Gen. 12:3). "Violence"(Heb. hamas) includes both moral wrong and physical brutality. This violence was especially despicable since it was against Edom's brother, Jacob (i.e., the Israelites). Consequently, great shame would cover Edom (cf. v. 2), and God would cut her off forever (cf. v. 9).
v. 11 God cited one specific instance of Edom's violence against her brother, but as I explained in the introduction, which instance is unclear. Edom's treachery against Judah had taken place on a particular "day"in the past. Likewise God's judgment would come on a particular "day"yet future (v. 8).24The Edomites' sin was that they failed to support the Israelites in their hour of need (cf. Luke 10:31-32). Instead they stood aloof and watched joyfully as Israel's invader plundered Jerusalem. God considered the Edomites as guilty as Jerusalem's invaders because the Edomites failed to render aid to their brethren.
"In the sight of God, who looks not on the outward appearance but on the heart, there is little distinction in moral accountability between overt sin and an inner bias toward that sin that permits it to go unchecked (cf. Matt 5:21-32)."25
". . . the Israelites are always commanded in the law to preserve a friendly and brotherly attitude towards Edom (Deut. ii. 4, 5); and in Deut. xxiii. 7 it is enjoined upon them not to abhor the Edomite, because he is their brother."26
v. 12-13 God reinforced the seriousness of the Edomites' sin by condemning it in parallel terminology eight times (vv. 12-14).27Hostile attitudes more than physical violence were Edom's sins against the Israelites on this occasion. Blood ties should have transcended even covenant ties. Edom's allies would break covenant ties with her (v. 7), but she had betrayed blood ties.
v. 14 Physical violence eventually came into play too. As the Judahite fugitives from Jerusalem left the city, the Edomites met them at some fork in the road and slew them rather than helping them escape from the invader. Other Edomites imprisoned fleeing Judahites instead of giving them refuge. This could be poetic hyperbole, but there is nothing in the text that indicates overstatement. All the other descriptions of Edom's actions seem to be literal.
Some English translations render verses 12-14 as referring to the future while others interpret them as referring to the past. Most commentators take the time as past; God was describing something that had already happened.28A few take it as future describing something that would take place in the future.29Since this is a judgment oracle, it seems more likely that God was announcing judgment on Edom for something she had already done rather than for something she would do in the future. As she had been proud (v. 2), she had also been violent (v. 10).30
The two most likely historical occasions that are in view are, first, the invasion by a coalition of Arabs and Philistines who carried off King Jehoram, his family, and his property during a period of tension with Edom (2 Kings 8:20-22; 2 Chron. 20:1-2; 21:8-17; 22:1). The second possible event was the destruction of Jerusalem by Nebuchadnezzar in 596 B.C. (2 Kings 24:13-16; 25:4-17; 2 Chron. 36:18, 20; cf. Ps. 137:7; Jer. 9:26; 25:21; 27:3; 40:11; Ezek. 25:12; 32:29; 35:3-9, 11-15; 36:2-7; Lam. 1:17; 2:15-17; 4:21-22). As discussed in the introduction to this exposition, I think there is slightly better evidence for the first occasion than for the second.