There is only one man in whom we can trust absolutely for reconciliation to God, and that is the God-man Christ Jesus. No matter how pious other servants of the Lord may be, following them simply for the sake of following them is never enough to be restored to our Creator. We can obey church leaders, show up every Sunday for worship, and otherwise appear pious, but none of these things are any advantage without a true and abiding trust in the Lord God Almighty.
There are differing views in the Reformed tradition of what new covenant Sabbath-keeping entails. Yet all agree that honoring the Lord’s Day is not about impersonal ritual but sustaining and strengthening the vital personal relationship we have with our Creator in Christ Jesus. Jeremiah’s focus on the heart (Jer. 4:4; 17:10; 31:33) indicates that when we follow a liturgy and seek to obey the Lord, putting our heart into such things separates God-honoring formality from disobedient formalism.