The same which Paul says, is said by Christ in other words, "Strive," says he, "to enter in at the strait gate." Here our best endeavors are called for, and therefore accepted by God, and yet at the same time he adds, "that many shall strive to enter in, but shall not be able." Why so, whence comes this? It is because Christ himself is the one door into life. Here the strivers mentioned by Christ, and those which St. Paul calls runners in a race, are the very same persons; and Christ calling himself the one door of entrance, is the same thing as when Paul says, that one only receives the prize, and that one, which alone obtains the prize, or that enters through the right door, is that new creature in whom Christ is truly born. For whether you consider things natural or supernatural, nothing but Christ in us, can be our hope of glory.