Obadiah 1

The Word of God came in a vision concerning Edom (descendants of Esau). God had ordained the enemies of Edom to rise up against her. Edom was a prideful nation, and God said he will use her enemies to bring her down. 

The pride of your heart has deceived you, You who dwell in the clefts of the rock, Whose habitation is high; You who say in your heart, 'Who will bring me down to the ground?'

Other offences God had against Edom: they had done nothing to help Jacob (Israel) in the day of her calamity; they rejoiced over her downfall; they plundered the city afterward; and they prevented the escape of the fugitives. 

For the day of the Lord upon all the nations is near; As you have done, it shall be done to you; Your reprisal shall return upon your own head. For as you drank on My holy mountain, So shall all the nations drink continually; Yes, they shall drink, and swallow, And they shall be as though they had never been. 

But...

...on Mount Zion there shall be deliverance, And there shall be holiness; 

In the Millennial Kingdom, there shall be a reversal, in which "the house of Jacob shall be a fire, and the house of Joseph a flame; But the house of Esau (Edom) shall be stubble; They shall kindle them and devour them, And no survivor shall remain of the house of Esau," For the Lord has spoken. Judah will destroy Esau. 

And when Messiah sets up His kingdom, the boundaries of Israel will expand to include the land promised to Jacob in his dream, supporting God's promise to Abraham. Israel will be huuuuge.

And the kingdom shall be the Lord's.

COMMENTARY 

Just for reference, Edom is made up of the descendants of Esau, and the Israelites are made up of the descendants of Jacob. Esau and Jacob were twin brothers, sons of Isaac and Rebekah. 

Question: why did God hate Esau? The little book of Obadiah tells us. 

Esau represents the flesh, the old nature; and Jacob represents the spirit, the new nature. We had to wait until Esau became a full grown nation in order to understand why God hated Esau, which was not expressed until Malachi, the final book of the Old Testament. What caused God to hate Esau? Pride.

Pride of the heart is the attitude of a life that declares its ability to live without God.

God has put Esau (Edom) under a "microscope." 

How are the things of Esau searched out! Come, look! Look through the Word of God and look at this man. I hate him. Why do I hate him? It is because of his pride of life. He has turned his back on Me and has declared his ability to live without Me!

Sadly, even when he was one man, Esau chose a bowl of soup over a relationship with God. 

Another reason God hated Esau: Edom became enemies with Israel, and they betrayed them. 

THE DAY OF THE LORD

The day of the Lord begins with the Great Tribulation period. Currently we live in the day of grace (or the day of Christ). In this period, the Holy Spirit is with us, and He shows us the things of Christ. After the removal of the church (believers) from the world, which we call the Rapture, the Day of the Lord will begin, which will be a time of darkness and judgment. After seven years of tribulation, Jesus Christ will return to the earth to establish His Millennial Kingdom. 

Jesus is going to judge the nations of the earth (see Matthew 25). According to McGee, Edom will become a nation again, just as Israel became a nation in 1948. Although God has judged Israel, they have not been completely removed. But according to the book of Obadiah, Israel will be restored, and Edom will be destroyed by Israel. 

At the end of Obadiah, there is the description of how wide the boundaries of Israel will be during the Millennial kingdom. God keeps His promises, and He promised to Abraham a land about 300,000 square miles! 

Finally, Jesus says: "And I, if I be lifted up from the earth, will draw all men unto me" (John 12:32). McGee adds:

Which way are you going...Down the way of pride, pessimism, unbelief, and rebellion...? You who were made in the likeness of God can be restored. You will have to lay aside your pride and come in helplessness to this Savior. He can lift you.