"Long ago, at many times and in many ways, God spoke to our fathers by the prophets, but in these last days he has spoken to us by his Son, whom he appointed the heir of all things, through whom also he created the world." Hebrews 1:1-2
Q. 2. What rule hath God given to direct us how we may glorify and enjoy him?
A. The Word of God, which is contained in the Scriptures of the Old and New Testaments, is the only rule to direct us how we may glorify and enjoy him.
In his Institutes of Elenctic Theology, Francis Turretin poses the question, "Was it necessary for the Word of God to be written?" His answer was simple: no and yes. No, it was not necessary because the Church (from Adam to Moses) existed sufficiently without the written Word; but, yes, now the Word does exist, and must exist, "for the better establishment and comfort of the Church against the corruption of the flesh" (WCF 1.1).
The argument is made in our post-modern world: "The Bible has been translated so many times. Christians really don't know what they believe." In reality, the opposite is true: because we have the Word, we have proof we know what we believe (2 Timothy 3:16)!
What option, then, does the world leave us, if we cannot trust the Word? Turretin poses another question, "What would the Church be without the Word?" Answer: chaos. Yet, we don't worship a god of chaos, we worship the God of peace (Hebrews 13:20-21).
Why has God given us His Word? To lead us to the Word, who became flesh and dwelt among us. The Word who is full of Grace and Truth. The Word who is the Truth, Life, and only Way to the Father. The Word who bore our sin and says, "It is finished." The Word who offers forgiveness and His righteousness: eternal life with God. The Word who is the Lord Jesus Christ.
Do you believe in this Word? Do you believe that God gave you this Word? Believe! Read! It is your rule of faith and life.