From Our Reformed Doctrinal Standards
The Belgic Confession of Faith
Article 25 - Of The Abolishing of the Ceremonial Law
We believe, that the ceremonies and figures of the law ceased at the coming of Christ, and that all the shadows are accomplished; so that the use of them must be abolished amongst Christians; yet the truth and substance of them remain with us in Jesus Christ, in whom they have their completion. In the meantime, we still use the testimonies taken out of the law and the prophets, to confirm us in the doctrine of the gospel, and to regulate our life in all honesty, to the glory of God, according to His will.
The Heidelberg Catechism
Questions and Answers 3-5, 114-115
Q. 3. Whence knowest thou thy misery?
A. Out of the law of God.
Q. 4. What doth the law of God require of us?
A. Christ teaches us that briefly, Matt. 22:37-40, "Thou shalt love the Lord thy God with all thy heart, with all thy soul, and with all thy mind, and with all thy strength. This is the first and the great commandment; and the second is like unto it, Thou shalt love thy neighbor as thyself. On these two commandments hang all the law and the prophets."
Q. 5. Canst thou keep all these things perfectly?
A. In no wise; for I am prone by nature to hate God and my neighbor.
Q. 114. But can those who are converted to God perfectly keep these commandments?
A. No: but even the holiest men, while in this life, have only a small beginning of this obedience; yet so, that with a sincere resolution they begin to live, not only according to some, but all the commandments of God.
Q. 115. Why will God then have the ten commandments so strictly preached, since no man in this life can keep them?
A. First, that all our lifetime we may learn more and more to know our sinful nature, and thus become the more earnest in seeking the remission of sin, and righteousness in Christ; likewise, that we constantly endeavor and pray to God for the grace of the Holy Spirit, that we may become more and more conformable to the image of God, till we arrive at the perfection proposed to us, in a life to come.