As a part of the body of Christ we are admonished by the living God to preach and teach his Word. Not just the New Testament but also the Old Testament, for in it we find the very meaning of life and our purpose for being.
The Commandments of God are the bedrock foundation for our teaching and Christ said “If ye love me, keep my commandments.” John 14:15.
This includes the 4th Commandment that says “Remember the Sabbath day, to keep it holy” Exodus 20:8.
Man does not have the authority to change God’s Word so we must live by it the very best we can, and by learning we can grow closer to God and live a more fulfilled life and be pleasing to him.