Ezekiel 35:5
Because thou hast had a perpetual hatred, and hast shed the blood of the children of Israel by the force of the sword in the time of their calamity, in the time that their iniquity had an end:
Cross-reference
Ezekiel 35:12 quotes Edom's revilings, while verse 5 gives the reason (perpetual enmity) — cause and effect within same oracle.
Ezekiel 25:12 also condemns Edom for vengeful acts against Judah, matching the offense described here.
Ezekiel 25:15 condemns Philistia's perpetual enmity — a parallel judgment pattern to Edom's here.
In Genesis 27:41, Esau's grudge against Jacob initiates the perpetual hostility that Edom later shows Israel here.
In Genesis 27:42, Rebekah warns Jacob of Esau's murder plot — the same hostility that Edom exercises here.
Psalm 137:7 recalls Edom's joy at Jerusalem's fall — the same 'time of their calamity' hostility condemned here.
Amos 1:11 also condemns Edom's perpetual anger and sword against Israel — directly parallel to this charge.
Obadiah 1:10-16 describes Edom's betrayal of Israel during disaster — the exact same sin denounced here.
In Obadiah 1:11, Edom stands aloof as Jerusalem is plundered — the same hostile inaction condemned here.
Numbers 20:20 shows Edom's early hostility by refusing passage — the perpetual enmity referenced here.
Jeremiah 30:16 promises that Israel's devourers will be devoured — the retribution Edom faces for its hostility.
Amos 1:6 condemns Gaza for selling captives to Edom — revealing Edom's complicity in Israel's suffering.
Jeremiah 10:25 prays for judgment on nations that devour Jacob — a fitting imprecation against Edom's actions described here.
Zechariah 2:8 warns that touching Israel touches God's eye — the divine protection Edom violated.