Longer Catechism (Orthodox) 26.507

Chapter 26 — Part III — The Ten Commandments

Section 507. Q. What duties are there which refer to the outward worship of God? A. 1. To confess God; that is, to acknowledge that he is our God, and not deny him, although for confessing him we may have to suffer, or even die. 2. To take part in the public divine service enjoined by God and appointed by the Orthodox Church.