Romans 9:14:

What then shall we say? Is God unjust? Not at all! (NIV)

What shall we say then? There is no injustice with God, is there? May it never be! (NASB)

What shall we say then? Is there unrighteousness with God? God forbid. (KJV)

In Rom 9:7–13 Paul makes it clear that “It is not the natural children who are God’s children, but it is the children of the promise who are regarded as Abraham’s offspring, i.e., God’s children.”

Paul now responds proleptically to the expected interpretation of this line of reasoning: “God gives unequal things to those who are equal.” The argument: “He who gives unequal things to those who are equal is unjust; God gives unequal things to those who are equal (e.g., he loves Jacob and hates Esau, both being equal); therefore, God is unjust.”

Paul’s immediate response to the question “is God unjust?” “Not at all!”