“Faith without works is dead.”
In regard to your “certain hope”, might want to look up the sin of presumption.
Faith is not presumption.
It's taking God at His word and believing that He'll do as He promised.
Besides, the *sin* of presumption is not mentioned anywhere in Scripture. It's a completely fabricated concept by Catholicism to convince Catholics that they can't trust God but need to have some religious organization that fancies itself a church to get to Him.
If the people know they could trust God to do as He said, they wouldn't need a religion and Catholicism would put itself out of a job by letting people know they are secure in GOD'S hands.
Telling them that trusting God is presumption and a sin is great job security for all those priests etc. It forces the masses to be dependent on Catholicism for their eternal destiny instead of depending on Jesus.