Spinoff: Law vs. Grace?

It is called a sure hope in multiple places, not a maybe, and there is a lot about confidence, too.
 

Now faith is the assurance of things hoped for, the conviction of things not seen.
Hebrews 11:1

…being confident of this, that He who began a good work in you will carry it on to completion until the day of Christ Jesus.
Philippians 1:6

I know whom I have believed, and am convinced that he is able to guard what I have entrusted to him until that day.
2 Timothy 1:12