R.c. Sproul said this quote

The Christian who is not diligently involved in a serious study of Scripture is simply inadequate as a disciple of Christ. To be an adequate Christian and competent in the things of God we must do more than attend “sharing sessions” and “bless me parties.” We cannot learn competency by osmosis. Biblically illiterate Christians are not only inadequate but unequipped. In fact, they are inadequate because they are not equipped.