Cold hearts are not anxious enough to doubt. Men who love will have their misgivings at times; that is not the evil. But the evil is, when men go on in that languid, doubting way, content to doubt, proud of their doubts, morbidly glad to talk about them, liking the romantic gloom of twilight, without the manliness to say,--I must and will know the truth. That did not John. Brethren, John appealed to Christ.