James 1:4

And let endurance have its perfect result and do a thorough work, so that you may be perfect and completely developed (in your faith) lacking in nothing.

Faith is not just a concept; it is something given to us by God, and we need to practice it. Faith comes by hearing and believing the word of God. If we never take the time to learn and hear, we will be weak in faith and easily doubt God. When we know the truth of the Bible, we will not be easily deceived by the world. The bible is our guidebook and our source of steadfast faith.