Of course, the speaker meant by being 'saved' participation in Messiah's kingdom, regarded in the carnal Jewish fashion; and our Lord's reply is primarily directed to setting forth the condition of entrance into that kingdom, as the Jew expected it to be manifested on earth. But behind that immediate reference lies a solemn unveiling of the conditions of salvation in its deepest meaning, and of the danger of exclusion from it. I. 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.' II. We note the reason for the exhortation. It is briefly given in verse 24 (last clause), and both parts of the reason there are expanded in the following verses. Effort is needed for entrance, because many are shut out. The questioner would be no better for knowing whether few would enter, but he and all need to burn in on their minds that many will _not_.