Edom deceived itself, believing that no one, no nation, could bring them down, but the Lord promised otherwise in the Book of Obadiah, even showing that those who were allied with Edom would turn against them by deceiving them,
“All the men in your confederacy shall force you to the border; the men at peace with you shall deceive you and prevail against you. Those who eat your bread shall lay a trap for you. No one is aware of it” (Obadiah 1:7).
We must not deceive ourselves into thinking that we are invincible, for if we become full of pride, the Lord can bring us down, even using our former friends to do it.