What is the difference between Martin Luther and John Calvin in their theological beliefs and teachings?

Martin Luther and John Calvin were both key figures in the Protestant Reformation, but they had some differences in their theological beliefs and teachings. Luther emphasized the concept of justification by faith alone, while Calvin focused more on the idea of predestination and the sovereignty of God. Luther also believed in the priesthood of all believers, while Calvin emphasized the importance of a structured church hierarchy. Overall, while both men shared some common beliefs, such as the rejection of certain Catholic practices, they had distinct theological emphases that set them apart.