So faith comes from hearing, and hearing by the word of Christ.
If you want to feed your faith, make sure that the Bible is the main dish in your spiritual diet!
While this passage is talking about saving faith, the principle is no less true for the faith needed in your daily Christian walk. So if you want your friend to trust in Christ for salvation, open your Bible as you talk to them about Jesus; show them the passages you're talking about. Want to grow in your faith as a believer? Open your Bible and read it yourself.
God's self-revelation in the Bible will increase your faith! As someone once said, "If we are not interested in the word of God, can we really be interested in God?" It's in His word that you'll see the greatness of who He is. His unbelievable power will become a part of how you weigh the difficulties of life. His grace toward the worst of sinners will give you confidence to approach Him when you have sinned. His kindness will lead you to repentance. His wisdom will cause you to trust Him even when you can't understand what He is doing. His love will move you to commit yourself in love to Him.
God's reminding us today that He's given us a great ally in our spiritual life: His word. Build your life on His word and watch your faith grow.