"Our very familiarity with the gospel often begets in us a hardened state of mind. We are apt to read the Scriptures, and preach the Word, and conduct public worship, and carry on the service of God, in a dry, hard, formal, callous spirit. Our very familiarity with sacred things, except we watch our hearts, is likely to lead us astray."

J.C. Ryle, Warnings to the Churches, p. 44.