The theme of Deuteronomy 12-13 is Not Just Any Old Way. Moses reminds the Israelites that worshiping God must be done according to His instructions, not by blending it with the practices of false religions. He commands them to destroy the pagan altars, idols, and places of worship in the land of Canaan, ensuring their focus remains on God alone. Moses also emphasizes the importance of unity and warns against doing “whatever is right in your own eyes.” In chapter 13, he cautions the Israelites to reject false prophets or even family members who encourage worshiping other gods. Idolatry is considered treason against God because it leads people away from truth into dangerous and evil practices. For us today, this passage reminds us to worship God sincerely, in spirit and truth, avoiding the mixing of worldly ideas with biblical worship. God desires both faithfulness and unity among His people.