Let me speak to those who have not come to Christ—but mean to some day. I marvel at your presumption. Who are you, that talk of some day? You may be dead in a week. Who are you that talk of some day? You may never have the will or opportunity, if not today. How long will you go on halting between two opinions? You must come to Christ some time—some day; why not now? The longer you stay away, the less chance there is of your coming at all; and the less happiness will you have in the world. "Take heed, therefore, lest, a promise being left us of entering into His rest, any of you should seem to come short of it" [Heb 4:1]. Many meant to have come in their old age—but put it off until too late.
~ J.C. Ryle