Everywhere men are demanding proof. The demand of the human mind is for definite knowledge and positive assurance. And God has condescended to meet this need. One thing which distinguishes Christianity from all human systems is that it deals with absolute certainties.
Christians are people who know.
And well it is that they do. The issues concerning life and death are so stupendous, the stake involved in the salvation of the soul is so immense, that we cannot afford to be uncertain here. None but a fool would attempt to cross a frozen river until he was sure that the ice was strong enough to bear him. Personal assurance is the crying need of the hour. There can be no peace and joy until this is attained.