Thomas Boston, Works, 5:268-269:
Let preparation for death be the main business of your life. For your abiding happiness and misery depends on what issue your journey takes: and now is the time, the only time to fix that point. He that lives in Christ shall die in him, and dying in him be happy for ever. And he who gets not into Christ while he lives, will find the door shut when he is dead, and no more access to salvation. Therefore prepare in time. See to your state, that ye be in that respect fit to die; that ye be out of your natural state, and brought into a state of grace. And watch, and inure yourselves to a dying frame, that ye may be always as on the wing for your departure.
Let preparation for death be the main business of your life. For your abiding happiness and misery depends on what issue your journey takes: and now is the time, the only time to fix that point. He that lives in Christ shall die in him, and dying in him be happy for ever. And he who gets not into Christ while he lives, will find the door shut when he is dead, and no more access to salvation. Therefore prepare in time. See to your state, that ye be in that respect fit to die; that ye be out of your natural state, and brought into a state of grace. And watch, and inure yourselves to a dying frame, that ye may be always as on the wing for your departure.