How many times do we say, "I can't" in a day . . . a week . . . a year? Imagine if God had given up on any of the greats in Hebrews 11! Just as with Moses, Abraham, David, and others, He will not give up on us.
Many suffered for their faith even before salvation had been won by Christ upon the cross. Many more suffered after His resurrection. Now that we know what we know, let's stop doubting God so much and remember, "God can!"