In all things we hold to God’s holy Word and to the Three Forms of Unity founded upon that Word, namely, the Confession of Faith, the Heidelberg Catechism, and the Canons of Dordt. For the maintenance of good order in the church of Christ, we hold to the Church Order, studiously taking care in its implementation that we do not depart from those things which Christ, our only Master, hath instituted (Confession of Faith, Article 32).
For by grace are ye saved through faith; and that not of yourselves: it is the gift of God: Not of works, lest any man should boast.
Ephesians 2:8&9