Hebrews 13: 9 states: “Do not be carried away by varied and strange teachings; for it is good for the heart to be strengthened by grace, …” Reformed doctrine has stayed much the same since 1600 (about the time when most of the Reformed confessions and catechisms were finished) to today. Reformed doctrine was the sole doctrine, or at least the predominant doctrine, of the Reformation and our Protestant faith until about 1800 at which time Arminianism started to increase in popularity. So, Reformed doctrine is neither varied nor strange. Reformed doctrine does emphasize grace, including “salvation by grace alone”. Reformed doctrine is also known as “The Doctrines of Grace”.
Are teachings more true, because they are varied?
Are teachings more true, because they are not so easily labeled?
Are teachings more true, because it may be easier to believe in man’s work (“What shall we do, that we may work the works of God?”) than God’s grace (“This is the work of God, that you believe in Him whom He has sent.” ? See John 6:28-29.
Are teachings more true, because it may seem more just for everyone to have an equal opportunity for salvation and that we can control salvation by our choice by free will (works), rather than to believe that salvation is controlled by God’s election (grace)?
The doctrine of our forefathers of the faith in the Reformation and the Protestant faith is not varied nor strange. Reformed doctrine stays the same and is not ashamed to be labeled Reformed doctrine. The Belgic Confession, The Canons of Dordt, The Heidelberg Catechism, and The Westminister Confession of Faith remain the Reformed doctrinal standards. Although they were written about 400 years ago, they remain the rock-solid truth and yet are filled with God’s grace.
It is good for the heart to be strengthened by grace.
Reformed Doctrine Daily Devotions 