What the Bible says about Edomites
(From Forerunner Commentary)

One might imagine that, because of all the trouble Israel and Judah have suffered at the hands of the Edomites down through history, Obadiah would have written his prophecy against Edom with great antagonism: "These are our enemies, and they deserve this!" This, however, does not seem to have been the case. A sadness seems to run through the book; there is a sense that Obadiah's poetry is a lament for an entire people caught in the act of rebellion against God. From time to time, his message takes on an imploring tone, suggesting an ephemeral hope that they - or at least some of them - will change. Between the lines are hints that perhaps some Edomites will read this message and not do what their fellow Edomites are prophesied to do. This slight hope may spring from God's command in Deuteronomy 2:2-6:

And the LORD spoke to [Moses], saying: "You have skirted this mountain [Mount Seir] long enough; turn northward. And command the people, saying, 'You are about to pass through the territory of your brethren, the descendants of Esau, who live in Seir; and they will be afraid of you. Therefore watch yourselves carefully. Do not meddle with them, for I will not give you any of their land, no, not so much as one footstep, because I have given Mount Seir to Esau as a possession. You shall buy food from them with money, that you may eat; and you shall also buy water from them with money, that you may drink.'"

God tells Israel, "Treat the Edomites with kid gloves as you go through their land." Later, in Deuteronomy 23:7, He warns them again, "You shall not abhor an Edomite, for he is your brother." By God's command, Israel was to approach the Edomites with fraternal care in all their dealings. Brothers have a bond by virtue of birth; they are of the same blood. They should get along, and cooperate with each other. Each should guard the other's back.

The two sons of Isaac rarely treated each other in this manner, but this is the standard to which God held the Israelites. Obadiah may have written his message with God's standard in mind. In his vision, he sees Edom's mistakes as the Edomites stubbornly head toward destruction. The prophecy takes the form of a brotherly warning for them to turn from their course before it is too late, but by all indications, Obadiah's warnings will go unheeded.

15 eOutside are fthe dogs gand sorcerers and the sexually immoral and murderers and idolaters, and everyone who loves and practices falsehood.

9 Or do you not know that the unrighteous1 will not inherit the kingdom of God? Do not be deceived: xneither the sexually immoral, nor idolaters, nor adulterers, nor men who practice homosexuality,2 10 nor thieves, nor the greedy, nor drunkards, nor revilers, nor swindlers will inherit the kingdom of God.

19 Now bthe works of the flesh are evident: sexual immorality, impurity, sensuality, 20 idolatry, sorcery, enmity, strife, jealousy, fits of anger, rivalries, dissensions, cdivisions, 21 envy,1 drunkenness, orgies, and things like these. I warn you, as I warned you before, that dthose who do2 such things will not inherit the kingdom of God.

5 For you may be sure of this, that ueveryone who is sexually immoral or impure, or who is covetous (vthat is, an idolater), has no inheritance in the kingdom of Christ and God.

9 understanding this, that the slaw is not laid down for the just but for the lawless and disobedient, for the ungodly and sinners, for the unholy and profane, for those who strike their fathers and mothers, for murderers,

14 sStrive for peace with everyone, and for the tholiness uwithout which no one will see the Lord.

Ephesians 5:11-14
Take no part in the unfruitful works of darkness, but instead expose them. For it is shameful even to speak of the things that they do in secret. But when anything is exposed by the light, it becomes visible, for anything that becomes visible is light