(Romans 10:17) “So then faith cometh by hearing, and hearing by the word of God.”
There are only two essential components of faith. The Word of God and ears to hear. Oh, not physical ears, but spiritual ones. “Lost people” are dead and deaf to the spiritual nature of the word of God until regeneration takes place. Hence, “hearing comes by the word of God”. Saved peoples faith does not flourish and grow when they are not sitting under the preaching and teaching of the Word on a regular basis. Faithfulness to Church is essential to Spiritual growth.
(Hebrews 10:24-25) “And let us consider one another to provoke unto love and to good works: Not forsaking the assembling of ourselves together, as the manner of some is; but exhorting one another: and so much the more, as ye see the day approaching.”