How do we know that God keeps His chosen people?

The assurance of God keeping His elect is rooted in His covenantal promises. The phrase 'I the Lord do keep it' signifies God's personal responsibility and faithfulness towards His church. Throughout Scripture, especially in Jude 24, we see that God is able to keep us from falling and to present us faultless before His glory. His keeping is not based on human effort but on His sovereign grace and the accomplishments of Christ. This is a central theme in Reformed theology, affirming that God’s choices and actions to preserve His people are definitive and unbreakable.