John MacArthur states in Truth For Today:
Why is this hope important? Unbelievers do not trust Him, so they cannot hope in Him. But as a believer, you have seen that God has been faithful in your past and present and that gives you hope that He will be faithful in the future. And that gives Him glory.
Simply put, God is glorified when you trust Him. He's glorified when you believe Him. And he is glorified when you hope in His future promise. The God who has given you such a great salvation is worthy of your hope.
