Why should Jesus be an authority in my life? The author of Hebrews gives two reasons: because of who he is and because of what he has done. Hebrews repeatedly cites the Old Testament to show that Jesus fulfills many prophesies, demonstrating who he is. And Jesus took our sins on himself on the cross, demonstrating his love for us. The audience of Hebrews were under intense pressure to deny Jesus. Hebrews is reminding them that there is only one way to be made right with God (through Jesus) and it's not tradition or religion but relationship.