The most uncomfortable and difficult Bible verse
ROMANS 9 The most significant passage in the New Testament that concerns double predestination is found in Romans 9. For this is the word of promise: “At this time I will come and Sarah shall have a son.” And not only this, but when Rebecca also had conceived by one man, even by our father Isaac (for the children not yet being born, nor having done any good or evil, that the purpose of God according to election might stand, not of works but of him who calls), it was said to her, “The older shall serve the younger.” As it is written, “Jacob I have loved, but Esau I have hated.” What shall we say then? Is there unrighteousness with God? Certainly not! For He says to Moses, “I will have mercy on whomever I will have mercy, and I will have compassion on whomever I will have compassion.” So then it is not of him who wills, nor of him who runs, but of God who shows mercy. For the Scripture says to Pharaoh, “Even for this same purpose I have raised you up, that I might show My power in you, ...