There are two lines running down thru the Bible from beginning to end. We will here examine a few.
There is the one line of the life, love, faith and the grace of God. And there is the other line of law, human effort, and performance-based acceptance thru works of the law.
Here are examples of the two lines:
The Tree of Life vs the Tree of the Knowledge of Good and Evil. Gen 2-4. The first tree represents the Life of Christ, a tree which God returns us to and gives us access to again thru the cross, our death with Christ. Rom 6:3-5; Gal 2:20; Col 3:4. The other Tree is the tree of the knowledge of good and evil which teaches us that law is the way to God and a way to know the difference between good and evil so we can try hard to do good and avoid evil, thereby gaining God's acceptance. It is the TREE OF LAW which leads to sin and finally death. 1 Cor 15:56; 2 Cor 3:6-end of chapter 3; Rom 7:5, 10.
More here: http://safeguardyoursoul.com/two-lines-running-thru-the-bible