There are many stratagems by which the devil contrives to keep man away from Christ.
3. “If I knew I were one of the elect I would come; but I fear I am not.” To you I answer, Nobody ever came to Christ because they knew themselves to be of the elect. It is quite true that God has of His mere good pleasure elected some to everlasting life, but they never knew it till they came to Christ. Christ nowhere invites the elect to come to Him. The question for you is not, Am I one of the elect? but, Am I of the human race?
– from Memoirs & Remains, pp. 368-369.