How do we know idolatry is a problem for Christians?

John Calvin famously stated that the human heart is an idol factory, emphasizing that idolatry is an ingrained problem for all believers. Each Christian must recognize that idolatry arises from within rather than from external circumstances or influences. In Galatians 5:19-21, Paul lists idolatry among the acts of the flesh, warning that those who practice such things will not inherit the kingdom of God. The ongoing struggle against idolatry requires vigilance, prayer, and a daily commitment to seek God, as our flesh naturally gravitates toward placing trust in created things rather than the Creator.