We note, first, the all-important exhortation with which Christ seeks to sober a frivolous curiosity.
In its primary application, the strait gate' may be taken to be the lowliness of the Messiah, and the consequent sharp contrast of His kingdom with Jewish high-flown and fleshly hopes. The passage to the promised royalty was not through a great portal worthy of a palace, but by a narrow, low-browed wicket, through which it took a man trouble to squeeze. For us, the narrow gate is the self-abandonment and self-accusation which are indispensable for entrance into salvation.
The door of faith' is a narrow one; for it lets no self-righteousness, no worldly glories, no dignities, through. Like the Emperor at Canossa, we are kept outside till we strip ourselves of crowns and royal robes, and stand clothed only in the hair-shirt of penitence. Like Milton's rebel angels entering their council chamber, we must make ourselves small to get in. We must creep on our knees, so low is the vault; we must leave everything outside, so narrow is it. We must go in one by one, as in the turnstiles at a place of entertainment. The door opens into a palace, but it is too strait for any one who trusts to himself.
There must be effort in order to enter by it. For everything in our old self-confident, self-centred nature is up in arms against the conditions of entrance. We are not saved by effort, but we shall not believe without effort. The main struggle of our whole lives should be to cultivate self-humbling trust in Jesus Christ, and to fight the good fight of faith.'