We become confident in doing a task when we have repeated successful experience with that task. We may have failed the first time, and many times thereafter, but eventually we gained enough experience and knowledge to do the task well. Our confidence grew with each try.
Romans 10:17 says, “So faith comes from hearing, and hearing through the word of Christ.” If our faith is weak, it is because we have not devoted ourselves to hearing, knowing and following the Word of God. If we have no faith, it is because we have not accepted the gift of grace given in the gospel message. Faith grows as we know the truth and use it successfully in life.
Reluctant Retiree 