Why is Jesus called the author and finisher of our faith?

In Hebrews 12:2, Jesus is described as the author and finisher of our faith, emphasizing His sovereign role in salvation. As the author, He is the one who creates faith in the hearts of believers, and as the finisher, He ensures that this faith will lead to eternal life. This teaching aligns with the Reformed understanding of God's sovereignty in salvation, where it is God who works in us both to will and to do His good pleasure (Philippians 2:13). This gives us assurance that our salvation is secure as it is grounded in Jesus' work, not our own, reinforcing the idea that the believer's faith journey is one that ends in glorification through Christ.