If you want your faith to grow, read the Bible.
Earlier this Spring, in a discussion on sanctification, John Piper explains, “The only way faith grows is by God speaking to you. ‘Faith comes by hearing and hearing by the word of God’ [Romans 10:17] — and not just when you got saved, but everyday of your life.”
God speaks to us when we read his word. There is where we encounter his truth — his promises, his warnings, his commands — of which we are called to trust and obey. And his truth is where the Spirit builds our faith. In fact, as John Calvin teaches us, this is the great work of the word and Spirit.