How do we know that God cannot be tempted?

The understanding that God cannot be tempted is rooted in the nature of His holiness and perfection. In James 1:13, it is explicitly stated that God cannot be tempted by evil. The distinction lies in Jesus Christ's perfect humanity, which allowed Him to be tempted while being fully divine. As God, Jesus cannot be tempted; however, in His incarnation, He assumed a human nature that made Him susceptible to temptation without moral failure. This unique aspect is vital in recognizing that Jesus' ability to face temptation does not imply sinful nature, but rather underscores His genuine humanity.