Contradiction with 1 Kings 19:18
In Romans 11:3, the prophet Elijah claims that he is the only one left who serves God, but in 1 Kings 19:18, God informs Elijah that He has preserved seven thousand people in Israel who have not bowed down to Baal, contradicting Elijah's belief that he was the only faithful one remaining.
1 Kings 19:18: Yet I have left [me] seven thousand in Israel, all the knees which have not bowed unto Baal, and every mouth which hath not kissed him. [I have...: or, I will leave]