'Avenging' in the Bible

Why should the nations say, "Where [is] their God?" Let it be known among the nations before our eyes, [by] the avenging of the blood of your servants that was poured out.

Thus says the Lord Yahweh: "Because of the doings of Edom in avenging himself [with] vengeance for the house of Judah, and [so] they became very guilty and they avenged themselves on them,"

Yahweh is a jealous God and avenging; Yahweh is avenging and {full of wrath}. Yahweh takes vengeance against his enemies; he rages against his adversaries.