The Book of Hebrews is the key to connecting the theology of the Old Testament with the new.

In chapter 11 we read a showcase of the faith of Old Testament figures like Abel, Enoch, Noah, Abraham, and Moses, defining faith as being sure of what we hope for and certain of what we do not see which then encourages believers in Chapter 12 to persevere in their faith, using the metaphor of running a race and understanding God's discipline as a sign of his love. Chapter 13 provides practical instructions for Christian living, emphasizing love, hospitality, and contentment, concluding with a benediction and final greetings, in the typical form of a letter.