'Lord' in the Bible

The vision of Obadiah.This is what the Lord God has said about Edom:We have heard a message from the Lord;a messenger has been sent among the nations:“Rise up, and let us go to war against her.”

For the Day of the Lord is near,against all the nations.As you have done, so it will be done to you;what you deserve will return on your own head.

Then the house of Jacob will be a blazing fire,and the house of Joseph, a burning flame,but the house of Esau will be stubble;Jacob will set them on fire and consume Edom.Therefore no survivor will remainof the house of Esau,for the Lord has spoken.