How do we know the commandments of men are not from God?

In Matthew 15:3, Jesus questions the Pharisees about their traditions that violate God's commandments, highlighting that human traditions can lead to empty worship. True worship is determined by God's word, not by man-made rules. Our understanding and practices must align with Scripture; otherwise, they risk becoming mere traditions without any foundation in God's instructions. In Romans 2:28-29, Paul reinforces that true authenticity comes from the heart, not through outward rituals that men create.