In this verse, God is addressing the Israelites, warning them about the severe consequences of idolatry and unfaithfulness. By stating that He will set His face against those who turn to other gods, God is expressing His intention to actively oppose and punish such actions. The use of the phrase "make them an example and a byword" indicates that the punishment will be public and serve as a warning to others. This reflects the seriousness with which God views the covenant relationship with His people and the expectation that they remain true to Him.
The idea of being "cut off from their people" underscores the communal aspect of faith in ancient Israel. It highlights that individual actions can have broader implications for the community's spiritual health. This verse serves as a powerful reminder of the importance of maintaining fidelity to God and His commandments. It also emphasizes God's role as both a loving and just deity, who desires a relationship with His people but also holds them accountable to the standards He has set. The broader message is one of living in a way that honors God and strengthens the community's collective faith.