The Federation > Church Order > iv. Worship, Sacraments, and Ceremonies > Article 61. Admission to the Lord's Supper

The consistory shall admit to the Lord's supper only those who have made public profession of the Reformed faith and lead a godly life.

Members of sister-churches shall be admitted on the ground of a good attestation concerning their doctrine and conduct.

Church Order

iv. Worship, Sacraments, and Ceremonies